I just got a scratch om my door repaired. It was about an inch long and not all the way through the paint. That was $600 (my mechanic paid for it because it happened at their shop). If her scratch is on two surfaces (panel and door), the price will go up.
I got an estimate of about $1200 to repair a rectangle of missing paint on the rear quarter panel that's about 1 x 2". That is not getting fixed.
It is worth her while to get a couple of estimates from reputable shops.