I'm so sorry I hope she gets well soon!!
Why didn't you take her there earlier? From what I read, such skin conditions appear mostly in the first six months of a baby's life and I saw some really nasty photos.
I regret not heading to the dermatologist from the very beginning, I went to my GP first and he treated my rashes wrong. I believe your dermatologist will give you the right treatment and your little girl will start getting better almost instantly just like I did.
Positive energy and thoughts are coming your way! :D