Sheila Fuentes, a Savin Hill resident and mother of four, died in a car accident early Saturday morning. She was 39.

Shortly before 2:30 a.m., Fuentes was driving along Washington and School streets near Algonquin Square with her sister, Wendy. A small to mid-sized black car tried to pass them and struck their vehicle, smashing it into a tree and leaving the two stuck inside, police said.

The driver fled the scene before police arrived.

Wendy and Sheila Fuentes were transported to Boston Medical Center, where Sheila died of her injuries. Wendy is still recovering in the hospital.

“Everyone who knew Sheila loved her, she was so beautiful,” said Linda Lombardi, whose daughter has a 2-year-old child with Fuentes’ eldest son, Eddie. “It’s just so sad.”

Along with Eddie, 22, Fuentes leaves two sons, 2-year-old Cayden and 17-year-old Lexus; a daughter, Sianna, 3; and a granddaughter, Madison, 2. Eddie is caring for his younger siblings now, Lombardi said, and the family agreed Wendy will have custody once she recovers.

The family cannot afford to pay for funeral services, Lombardi said. Fuentes was not working at the time of the accident and spent her days taking care of Lexus, who has special needs, and babysitting Madison three days a week.

“My little granddaughter went there three days a week, and she was always so excited to see her nana,” Lombardi said.

Donations can be made out to the Sheila Fuentes Memorial Fund, Citizens Bank, 2343 Washington St., Roxbury, MA, 02119. Citizens Bank tellers will also take donations at any branch.

Police are still looking for the driver of the compact to mid-sized black car that hit Fuentes. Community members can call 617-343-4335 with any information.