Please see a vet, your ball python appears to be injured beyond the aid of home remedies. At this point the risk of infection is massive.
Do not soak her, she needs to stay dry. Moisture promotes further tissue damage. Keep her dry and clean.
heres a thread I posted about a similar experience I had, it may give you an insight on what you can expect from your exotic vet visit.
http://ball-pythons.net/forums/showt...t-it-With-Pics
hope it helps.