Born in Marlborough, the daughter of the late Ralph and Claudette (Lesieur) McDonough, she had been the former wife of the late Leo Maselli.
Following her graduation from Hudson Catholic High School in 1972, Sheryl trained at Massachusetts General Hospital, receiving her RN in 1975. She had been employed at Framingham Union Hospital as a Registered Nurse until 1987 when she left active nursing to work as a paralegal for the law firm of Cornell and Gollub in Boston. She retired in 2013 due to her illness.
She enjoyed caring for her garden, the Red Sox, and spending days at the beach, and had traveled extensively with friends and family. For many years, she had been a caregiver with the Cat Connection of Waltham.
She is survived by her children, to whom she was devoted and a best friend, Jeffrey Maselli of Marlborough and Leigh Andonian and her husband Jonathan of Billerica, and her 6-month-old granddaughter, Isabella Andonian, as well as her aunts, uncles and cousins.
Visiting hours will be held Friday, Feb. 14, from 4 – 7 p.m., at the Slattery Funeral Home, 40 Pleasant St., Marlborough. A funeral Mass will be celebrated Saturday, Feb. 15, at 11:00 a.m., at St. Matthias Church, Hemenway Street, Marlborough. Burial will follow at Evergreen Cemetery, Wilson Street, Marlborough.
Donations may be made to Mass General Cancer Center, 55 Fruit St., Boston, MA 02114 or Parmenter Community Care and Hospice, 266 Cochituate Rd., Wayland, MA 01778.