Try not to use too much betadine, if she's stained, it may be a little much. It can actually be detrimental to healing if in excess, a lot of the vet community has gone completely away from using it because of this.

Treatment is good, but the 'if a little is good, a lot will be better' is not the case here. Good luck! :] I'm glad you're caring for her, and hopefully she'll clear up after her shed.