OK a few things here.
1. Welcome to AF!
2. Your girlfriend is no longer allowed to drive your car.
3. If the scratches are as bad as you say you should take his advice if you are really that concerned about it. I work at a car dealership and we hardly ever do on-site touch up work on almost new cars because of just that. It is too difficult to do it well enough.
Ask around, take it to a reputable body shop, and it shouldn't be too outrageously expensive.
Good luck!