I had the same thing happen with my male BP, but was able to get him switched to f/t pretty quickly after I received him, it was like he was being attacked every single time I fed him live.
If this happens often (like it did with my male BP) it might be a good idea to either give the snake smaller live prey items (I have never done this but have heard someone say that smaller prey have smaller teeth and can do less damage, I'm not speaking from experience though) or switch to f/t to make sure it doesn't happen again. My boas all switched to f/t (blow dried after thawing) with no problem at ever, they're actually better at taking f/t then my corns are!

Just watch her when feeding, and if it seems to be a reoccurring problem then I would think about trying something else.

P.S. I had used neosporin for my BP when he was injured, I just applied a small amount with a q-tip and he never got an infection, just keep an eye on it! I used the same thing for my boas baytril scars.