According to the Times News, the two girls are 5 years old and were traveling across the street with an adult.
The vehicle that struck them did stop.
Landing zones were setup at the Tamaqua Area Middle School Parking Lot and both were flown to an area hospital.
Story from the Times News
http://www.tnonline.com/2016/jun/02/two-girls-hit-car-tamaqua-flown-hospital