Randi T. Dubin

Randi Thulin Dubin died at home in Springs on Sunday at the age of 61. Ms. Dubin suffered from a neurological condition, a major neuropathy that weakened her slowly but progressively over the past five years, according to her husband, Michael Dubin. She stopped breathing in her sleep, he said.

Her ashes will be dispersed from the dock off the couple’s backyard on Accabonac Harbor, where she spent many hours swimming and boating. The Dubins have a place in Manhattan, but their house on Springs-Fireplace Road, where they have lived for 35 years, is their primary residence, Mr. Dubin said.

Ms. Dubin was born on Staten Island on June 14, 1954, to Einar Thulin and Louise Caiola, who survive her. After graduating from Our Lady Queen of Peace School on Staten Island, she went to work at Brown Brothers Harriman, the international banking firm, from 1973 to 1980. She eventually went back to college, earning a B.A. in psychology from the City University of New York’s Staten Island campus. She went on to study at Columbia University’s Teachers College, where she received a master’s degree in counseling and organizational development.

Though she never worked in psychology, said her husband, “she was everybody’s best friend and counselor.” She was a wonderful mother, he said, doing a lot of work with her daughters’ schools, especially the Town School in Manhattan.

She also managed her family’s investment properties, including Blue Oak Vineyards in California; worked with her mother at Louise Thulin Real Estate, and served from 2010 to 2013 as a consumer representative to the New York City Consumer Affairs Council, an independent council that advises the commissioner of the city’s Department of Consumer Affairs.

She was a lifelong advocate for animal rights, her husband said, and the family adopted four rescue animals. After their daughters’ horse was injured and sent to Camp Rusk, a foundation that houses retired horses on a free-range farm in Texas, Ms. Dubin volunteered as an adviser to the camp.

Ms. Dubin was also a film aficionado and a gifted chef. She will be remembered for her sharp wit and vibrant sense of humor, her family said.

In addition to her parents and her husband, whom she married in 1982, she is survived by three daughters. They are Krista Alexandra Dubin and Karoline Hannah Dubin, both of Manhattan, and Erika Ashley Dubin of East Hampton. She also leaves two brothers, Richard Thulin of Bethlehem, Pa., and John-David Thulin of Southampton.

A service will be held on Feb. 20 at St. Catherine of Sienna’s Church, 411 East 68th Street in Manhattan, at 11 a.m. Mr. Dubin, an unordained minister, will help to officiate.