Keyed car

[maccboy]

My daughter's car (which she's only had for two months) has been keyed along the two nearside doors. A Revive man has been to see it and says, because the line goes right across the doors, it will need to go to a body shop. He reckons it'll be around £800. If she doesn't use insurance - and she can get it cheaper than that - does she have to tell the insurance company? If she does, will the fact that it's vandalism count in her favour and mean that her next premium is not quite so sky-high? She's only 21 and is pretty upset about it all. It's such a senseless thing to do.