Diane Marie Day Grace, age 54, who previously lived in Ridgefield, died Monday, May 19 with her husband of 22 years, James V. Grace, known as Jamie, by her side.

She grew in Greenwich before moving here, then lived in Whitehouse Station, NJ, and then Redding.

Ms. Grace was the daughter of Hugh Allen Day, who died when Ms. Grace was still a very young woman in her 20s, and Dorothy Smith Day, who died several years later. While Ms. Grace was an only child, she spent so much time with her cousins in New Jersey that they were more like siblings, her family said. Her mother’s sister, Norma Smith Schultz, who her family said was like a second mother to Ms. Grace, died on April 5th of this year.

Ms. Grace became a mother herself on Feb. 23, 1995, with the birth of her and Mr. Grace’s daughter, Chloe Savannah Grace.

“Chloe has struggled with autism and Diane struggled, too, never giving up in helping Chloe and surrounding her with love, whether it was through words, a hug, a funny face, or gestures guiding a very active child through a world that is very hard to explain,” Ms. Grace’s family said.

She is survived by Mr. Grace and Chloe. The family extends gratitude to the doctors, nurses and ER workers at Danbury Hospital, and to the EMTs and paramedics of Redding, West Redding and Bethel.

A memorial mass will be held at noon on Wednesday, May 28, at Sacred Heart Roman Catholic Church, 1-19 Church Street, Georgetown. Donations in Diane’s memory can be made to AutismSpeaks.org.