NEED TO KNOW

Ivana Balistreri, 29, and her daughter, Lilliana, were killed on Dec. 2 in a multi-vehicle crash on Highway 87 in San Jose, Calif.

Lilliana would have turned 2 on Dec. 16, Ivana's sisters tells PEOPLE

The cause of the crash remains under investigation

A 29-year-old woman and her 1-year-old daughter were killed in a multi-vehicle crash in California just two weeks before the child's second birthday.

Ivana Balistreri and her daughter, Lilliana, were identified by their relatives as the victims of a four-vehicle crash on northbound Highway 87 in San Jose, which occurred shortly before 11 a.m. on Tuesday, Dec. 2.

Ivana's fiancé Zach Martins — who sustained minor injuries from the crash, but survived — was driving Ivana to the barbershop where she worked at the time, her ol

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