Police say a Montgomery county woman was drunk behind the wheel and reading a text message when she hit a teenage boy and took off.
That boy, 15-year-old Dennis Kee, died from his injuries after the April 26 accident. Prosecutors say Kee was walking with a few friends along Route 309 in Hatfield when he was hit.
Another teen was treated for a broken elbow.
Authorities say Sarah Ann Derstein, 31, took off from the scene of the crash and kept texting even after the accident.
"I'm an idiot. Just got in an accident and I drove away," that's what prosecutors say Derstein texted to her aunt after the accident.
Kee's sister talked with NBC10's Chris Cato about the phone call that changed her life.
"And I was like 'He's okay, right?' And he was like, 'No, he died'. And I was like, 'No, he's okay. That can't be my brother,' " said Breanna Hitchens.
Prosecutors say Derstein's blood-alcohol level was more than twice the legal limit.
"I just don't understand why you would take a risk with your own life, let alone someone elses life," said Hitchens.
Derstein is charged with homicide by vehicle, driving under the influence and other charges.