I’ve had great luck with hair and nail vitamins from GNC, but I’m told there are some sold at WalMart that are awesome. She can take those and use some sort of protein filler polish until her nails grow out. The current nails are “ruined,” but they will grow out and normal, healthy nails will grow in their place. If she takes the vitamins, it won’t take long at all, maybe 4-6 weeks.