Police say the girls were crossing a busy street in the Milwaukee suburb and were close to the curb when they were hit about 9 p.m. July 13.
Police say the car was a dark-colored, mid-size sedan or station wagon and may have a broken black, right-side mirror. They do not have a description of the driver.
Both girls were treated at a hospital and are recovering at home.
Larry Koszewski says his daughter, Liliana Koszewski, received the more serious injuries and he worries about her ability to compete as a pole vaulter for Wauwatosa West High School.
People with information on the crime can call Wauwatosa police at (414) 471-8430.

