Nate001: If she was on learners I would not do any digging and hope the other party didn't either. Police and insurance would be a bigger problem as she would have no insurance even if her name is on the policy.
That's actually incorrect but a common misconception. Just being an unaccompanied learner is not alone grounds for an insurer to avoid a policy. The reason to do so must be material. In this situation, if she were on her 1L there is nothing that a supervising passenger could have done to prevent the other person, assuming they are in fact at fault, which seems to be the case, from hitting her vehicle. So that makes it immaterial. Sure, they might SAY that they're not paying because of it, but the IOM would certainly rule in the policy holders favour should they wish to go to that. It's a shame so few people know about that service.
And rightly so too or we'd have them declining claims on the basis that a front park lamp was blown, and thus the vehicle was being operated while not being up to WoF standard as required by the policy, when it was a midday crash.
This is covered by Section 11 of the Insurance Law Reform Act 1977
Here's an Insurance and Savings Ombudsman decision from their Case Studies section to demonstrate it.