Injury on boat? Liability?

So yesterday riding on the Delta one of the girls riding behind my boat caught a nasty edge. She lost one tooth, chipped two, and had a 1 inch hole above her lip and seemed to have a concusion. (kept asking repetive questions, what happened where are we)

Fire department and ambulance hauled her out of Orwood Marina for us.

She is fine, well as fine as you can be after an accident like that. They released her this morning with 8 stitches.

I asked the fire department if they needed my insurance info or any other info and they said nope. They said everything was cool and they didn't need anything.

Whats my liability in this situation? I have great insurance so i'm really not worried, plus the girl has medical insurance I'm just curious?

( as a side note saw the CIE boys as I came into orwood with my injured rider. Maybe I shoudn't have been riding with all that lead and 8 girls for ballast! What you think? Should we call the 'Maliblue' the 'Facebreaker'? lol )