13-year-old Erin Suszynski died Wednesday morning at Women and Children's Hospital.
She and another 13-year-old, Briana Francois, were attempting to cross Maple Road the night of June 9 when they were hit by the SUV. Police say the girls had made it to a median in the road and were trying to across the remaining lanes when they ran into the vehicle's path.
Francois has been released from the hospital.
The SUV driver hasn't been charged. Police say their investigation is continuing.