SAN DIEGO -- Authorities released the name Monday of a 25-year-old woman who was killed when a car veered off a City Heights street and crashed into the bus bench she was sitting on alongside her son and boyfriend.

The eastbound Chrysler PT Cruiser struck El Cajon resident Vanessa Shane, the man and the 10-year-old boy in the 4800 block of University Avenue shortly before 8 p.m. Saturday, according to the San Diego County Medical Examiner's Office and San Diego police.

Paramedics took Shane to Scripps Mercy Hospital in Hillcrest, where she was pronounced dead shortly after arrival.

Her boyfriend was hospitalized with internal injuries and broken leg and foot bones. Her 4 year old son Eli was admitted for treatment of a fractured arm and cuts to his head and back, San Diego Police Department Officer David Stafford said.

It was not immediately clear why the 71-year-old motorist lost control of the hatchback sedan, though she is diabetic and possibly had low blood sugar at the time, according to investigators. She was not immediately cited for the accident.

"We were expecting her to come home. She was supposed to be riding the bus home. After 9:30, there was no response. She didn't come in, so we started texting, calling," said Vanessa's father, Mark Shane, recalling Saturday night.

Shane said he and his wife went to look for his daughter and granddaughter. When they returned home, a neighbor told them the police had been at the house.

"I said but everybody's ok right? He said, 'Well, that's the thing. Vanessa died. And my wife just fell to the floor," said Shane.

Shane and his wife say they haven't left their grandson's bedside at Rady Children's Hospital. They are waiting for him to get stronger before telling him that his mother is no longer with them. Shane says it will be the hardest thing he'll ever have to do.

Shane says they will raise Eli as if he was their own son, because that is what Vanessa would have wanted.