Quarantine her for at least a month, and up to six months if you can- separate rooms, wash hands, don't share anything that they will come in contact with.
Give her a week or two to settle in-no handling, unless you are cleaning the cage.
Stool samples have to be REALLY fresh, so if it's dried out, don't bother taking it in. If she poops again, grab what you can in a plastic zip-lock and stick in the the fridge until you can get it to the vet's. (i'd advise labeling it too).
Skin- I have found soaking in very lukewarm water an effective way to help get rid of old sheds. Or you can stick her in a pillowcaser that is damp, not soaking for an hour or two (make sure she doesn't get too cold) and you can help her peel off the newly moistened skin. This is the only way to get all the extra skin off my male because he refuses to soak himself.
I would start with frozen stuff- get a mouse and a small rat and see which she seems to like better. depending on her size, she may prefer larger or smaller food.
my frozen feeding balls are terrified of live animals, hee. Just heat them up in some warm water and wriggle about on hemostadts. My female prefers them "running away" from her, although sometimes she will just take it if i offer it to her without any jiggling.
Good Luck! sounds like she will be getting a great new home!