id keep it clean forabout a week and if it doesnt look any better take her to the vets, it will cost you for anti biotics and all, but hey better than cutting her foot of .
my dog fell of the back of the ute whilst tied to it. he was draged for a bit untill his collar snaped, thank god for that as he would have been hung, his toe nails were bleeding badly so when we got home i dryed his feet cleaned them up and thay were bleeding a bit still . so i put corn flower on it and he is fine now. good luck