I would have thought prednisone, too. Was she on a steroid while hospitalised? I would talk to your vet, and ask what caused the skin infection, and whether that caused her hair loss - she may have a flea allergy that you will need to plan for (fleas are usually the source of canine tapeworms). As long as there is no scarring her coat should grow back - do keep us posted on how she does. She is very sweet, even when slightly denuded!