SOS!! How to heal clipped fingernail??

My daughter is 3 weeks old & my mom was trying to help by cutting her nails & this happened. My daighter bawled for about 15 then nursed and fell asleep. She’s sleeping sound and comfortably now but now that I see how bad it is I’m wondering if there’s anything I should do to help it heal? Or the pain? My poor mom feels so bad