In Philadelphia, Haitian-born cabdriver Yves Aristilde sits behind bars, with bail set at $6 million.

He is charged in the fatal hit-and-run crash that snuffed out the life of 5-year-old Tyrell Elliott as he crossed a street in the Logan section of the city with his mother just before 2 a.m. Sunday.

Police believe Aristilde, 62, was behind the wheel of a Yellow Cab that allegedly blew through a red light and slammed into the mother and child.

Aristilde left the scene and abandoned his heavily damaged cab a few blocks away, according to police. He turned himself in to authorities the next day.

Just a few miles away, Kimberly Ferrell sits and waits. She lost her 16-year-old daughter, Faith Sinclair, to a hit-and-run driver more than three weeks ago.

Police have impounded the vehicle they believe struck and killed the popular teen as she tried to cross Chester Pike in Sharon Hill. They know who the owner is. They’re referring to him as “a person of interest.” But they do not know who was driving that night. No one has been charged in the case.

The owner of the Mercedes has declined to talk to police.

Kimberly Ferrell buried her daughter, but she can’t bury what happened. And she can’t bury her feelings, either.

She visits the site where her daughter was killed and reads passages of the book they were sharing at the time she was so violently taken from her.

And she waits. For closure, and for justice.