Kylan Allen, 12, and her best friend, 13-year-old Haven Penman, were being driven by Allen's grandmother, L.E. Mason, to a church gathering on the evening of Jan. 18 when they were struck by another vehicle in Colton.
Penman and Mason died at the scene. Allen was critically injured and died a few days later.
"She was just an innocent lady trying to take her little girls to a church function," said Allen's father, Keith Allen.
The driver of the other vehicle, 29-year-old Michael Hughes, was arrested by Colton police for driving under the influence, but no charges have been filed.
Allen says there are questions about whether or not his mother-in-law failed to yield before the crash, but he wants to know why a suspected drunken driver is free.
"He hasn't been prosecuted for anything yet, no charges have been brought up," the father said. "I can't understand this and I just want some justice for my daughter Kylan, and Haven."
The district attorney's office tells Eyewitness News the case is still under investigation.