Unfortunately, some kids don't have the luxury of having access to cars, regardless of peer pressure. It is a life lesson that she is being taught, even though she may not like it. Even though she may think her dad is withholding (even if he is).

He may THINK he's teaching her a lesson... when her lesson... her LIFE lesson... is likely much different than what HE thinks it is...

Is there any way you could "front" her a phone? Is she working? Could she get her own phone?