A car hit a mother and her 9-year-old daughter around 8 p.m. on Pineland Drive in Northeast Dallas.
The girl was killed and her mother was taken to the hospital.
The driver stopped, and there's no word if he or she will face charges.
About 15 minutes later in south Oak Cliff, a minivan backing out of a driveway ran over and killed a 2-year-old girl.
Police say that driver and the girl both live at the home where the accident happened, but are not related.
Police say that driver will not face any charges.