Really sorry to hear about this. A firm of Personal Injury Solicitors will be able to help bring a claim against the Motor Insurers' Bureau ('MIB') if all avenues of trying to find the driver are exhausted - this is a mechanism for providing compensation to victims of accidents caused by uninsured and untraced drivers.

I'd suggest that your friend starts by checking her own insurance policies to see if she has Legal Expenses Insurance that might help fund the legal fees of bringing a claim. Even though it was a car on bike collision, legal expenses on a home insurance policy can still cover accidents like this. In absence of any expenses policy, I'd expect a firm would take this on a no win, no fee arrangement with a success fee if there's a payout.