How are you "washing" her daily? I'd suggest you do NOT "bathe" her since this is a localized issue only- right? Dilute a little Betadine & use a Q-tip to apply it just to the affected area & a little beyond it. If you can do this without picking her up out of her home, so much the better. Try to keep treatments low-key with as little intrusion as possible, though if she's in a hide, you'll obviously have to pick up the hide temporarily.