Kathleen Wartha Muller , beloved wife, mother, grandmother and aunt, of Auburndale, Massachusetts, passed away on November 10, 2025, at the age of 83.

Kathleen was the wife of Dr. James Muller, the mother of Susan Muller, Brian Muller and Emily Muller, and a grandmother to Molly Manning, Abby Manning, and Annika Satkowski.

Kathleen was born in South Bend, Indiana on November 8, 1942 to Irene and Rudolph Wartha.   She enjoyed telling the story that at age 2, her mother, who was born in a small village in Hungary, was rejected from a steamship travelling to the US because of an eye infection.  Were it not for that infection, her mother would have been a passenger on the Titanic, and the world would have been deprived of the joy that was Kathleen.

Kathleen had many marvelous traits expressed in her multiple roles in life. Her passion for life was easily recognized in her beautiful singing and piano playing. One of her most cherished memories was sitting side by side with her sister Dolores in the family house in South Bend playing piano together, singing in harmony and making each other laugh. She would recount later how singing in harmony for them was not something that needed to be figured out or learned, that it was just what came naturally. Later in life, these early moments with Dolores at the piano were recognizable to her as the origin and continued source for her playing & singing for the many years following.  Embracing and keeping music with her throughout her life, she would go on to become a multi-instrumentalist, playing not only piano, but some banjo, and later in life 24 years of playing drums.

In her piano music, you could hear not only a technically accomplished player, tackling complex pieces from Beethoven, Bach, Brahms and Chopin, but also an enormous capacity for conveying emotion through her natural use of dynamics and attention to tempo. In her drumming, she could just as easily bring to life the spirit of Beatles, Rolling Stones and to the amazement of her children, Led Zeppelin even into her 80's.

Kathleen was encouraged early on by her teachers in South Bend to pursue her interests in college. She enrolled in Marquette University in Milwaukee, Wisconsin. She would describe in later years being energized by the intellectual environment and took quickly to studies in the medical profession which she would continue the rest of her life. As would also be the case at each chapter in her life, she described finding a piano in a common area in the dorms at Marquette and playing that piano when she was in between studying or enjoying time with friends. Kathleen completed nursing school at Marquette University in 1964 and remained in contact with the close friends she made there for the rest of her life.

In 1967, after graduating and also serving as an instructor at Marquette, she applied and was accepted into a novel program to train nurse-midwives at the Johns Hopkins Hospital in Baltimore, Maryland. She recounted her family being fully supportive of her even though it meant leaving the Midwest. She packed and drove herself in a VW bug out to the east coast to begin her medical practice. During her time at Johns Hopkins she pursued academic study in the birthing process, childbirth education and midwifery, and traveled to homes in inner city Baltimore as part of outreach programs.  Influenced by Catholic social teachings advocating care for the less-privileged, she planned to take the midwifery skills she would develop to the Mississippi Delta region.

In 1968, while delivering a baby, she met Jim Muller, then a Hopkins medical student whom she married 6 months later.  In the 1970s Kathleen gave birth to Susan, Brian and Emily, and provided them with a life filled with love and enhanced by her brilliant musical talents.  She remained very close to her sister Dolores O'Brien, and after Dolores passed, she became an active and loving aunt to Bill, Tom, Mike and Shannon O'Brien.

She remained active in her career while raising her 3 children.  After moving to Boston in 1973 she organized a Lamaze childbirth education program for expectant mothers.  She went on to complete two more masters degrees in counseling and psychology. She completed her second masters at Boston College in 1994.  In 1996 she moved with her husband to Lexington, Kentucky where she provided psychotherapy for patients from disadvantaged areas of Appalachia, and played a role in the founding of the Gill Heart Institute.

Upon return to Boston, 1999 she completed a post graduate fellowship in behavioral health care at Harvard Medical School.  She expanded her areas of professional interest to include early intervention for infants with developmental disabilities and postpartum depression. She then began a 24 year practice as a psychiatric clinical nurse specialist. she was able to bring all 50 years of her medical study as well as rich life experience in support of her patients. She provided over 50 years of help for patients with a wide range of difficulties, before retiring two years ago at age 80.

Kathleen was not afraid to take risks to be helpful to her family, a friend, her community or the world.   In the week before her death, she purchased a refrigerator magnet of James Joyce saying "'Better to pass boldly into that other world, in the full glory of some passion, than fade and whither dismally with age".  Despite the government shutdown causing inconvenience and risks for air travel, she chose to fly to New Orleans to visit a friend who was ill, and on the day following the visit -- after a fall -- died suddenly.

In addition to her work with child and maternal health and psychotherapy, Kathleen worked in partnership with her husband on the global problems of prevention of nuclear war, child abuse by priests and heart attacks.  For each effort she was active at the beginning, and the endeavor reached a world scale.

In 1972, during the Cold War, Kathleen and Jim traveled to Moscow as members of a US governmental delegation.  The team prepared an agreement for US-USSR health cooperation subsequently signed by President Nixon and General Secretary Brezhnev.

In 1975, with Susan age 5 and Brian age 3, they lived in Moscow for three months as participants in US-USSR health cooperation against heart attacks.  In 1978 the joint research and the trust developed between the physicians of the Cold War enemies led to the proposal for creation of International Physicians for Prevention of Nuclear War (IPPNW).

In 1985 the entire family traveled to the IPPNW World Congress in Budapest, Hungary. After dinner in a tent for 200 overlooking the Danube, Hungarian dancers with high red boots entered singing and dancing.  Kathleen, with her Hungarian heritage and love of music, was one of the first to join the dancing, which was soon joined by doctors from the nations that were threatening to destroy each other with nuclear weapons.  Three months later IPPNW was awarded the 1985 Nobel Peace Prize. In recognition of this activity, a picture of Kathleen and her husband is now in a display at the Wellesley Historical Society. Recently, in 2025, she and Jim traveled to the Vatican to meet with Cardinal Tomasi, a leading advisor to Pope Leo XIV on prevention of nuclear war. Kathleen was pleased to learn of activity of Pope Leo against this threat.

In 2002, when the Boston Globe revealed widespread sexual abuse of children by Catholic priests, Kathleen urged the formation of a discussion group among the laity at St. John's Church to confront the topic and assist the Church in finding a path forward.  This advocacy led to Voice of the Faithful which became a worldwide organization that continues to be helpful to the Catholic Church.

While her professional work focused on maternal health and mental health services, she served as a partner to the work of her husband against heart attacks. She participated in the annual international meeting of scientists working against heart attacks, and along with her husband, was known for adding harmony to the after dinner singing of a song against the dangerous coronary plaques - adding the beautiful spirit that she brought to all parts of her life.

Visitation will be held at Henry J. Burke & Sons Funeral Home, 56 Washington Street, Wellesley Hills, MA on Sunday, November 23, 2025, from 2:00 p.m. to 5:00 p.m.  A funeral Mass will be held at St. John the Evangelist Church, 9 Glen Road, Wellesley Hills, on Monday, November 24, 2025, at 11:00 a.m. followed by refreshments and music in the church basement. Interment will be private.

In lieu of flowers, the family welcomes donations in Kathleen's honor to the All Newton Music School.  https://www.allnewton.org/kathleen