If your filter intake is too strong, you can get something like these
to put over the intake to prevent her from being sucked onto it. Or you an consider getting a sponge filter and air pump instead. Or remove the filter altogether. It's not necessary in a 1 gallon IMO. I don't filter anything under 5 gallons. As long as you're doing your water changes, no filter won't hurt her at all! :)
As for her condition right now, I don't think there's much you can do except wait and see...as long as she doesn't have any open wounds, she's probably just freaked out.