Thanks for the update!
I hope the antibiotics help and her skin starts feeling better soon. A note for the antibiotics - sometimes they can upset the tummy since they'll kill good bacteria in the gut as well as the bad bacteria. If you start seeing green poops, you can help by giving her probiotics like Bene-Bac (pet store) or acidophilus (human pharmacy, by the vitamins). Just a pinch on the food each night, just make sure it's at least a couple hours after the antibiotics so they don't render it useless. And if you need help with getting those antibiotics into her...there's a handy video stickied at the top of the Health section.
Good luck & let us know how she's doing!