I don't think scratching a car in a car park will make you premium rocket. Having a full-on collision, totaling your car, flipping it, at least denting another car or whatever might, but not a scratch.
Contact your insurance company now and see what they say the damage will be to your premium; it might not be as bad as you think. I wouldn't recommend doing this until she contacts them though, just in case you manage to settle it privately.
Apart from that, there's not much you can do but wait and see. She's within her rights, and is fully abiding by the law, and to be honest, if it's a company car and her company wants to go through these procedures, then that's their decision and it's not worth her risking her job.