C.S.
I'll tell you a good way to tell if a cat has ringworms so you can see if that is where she got it. Look at the cat's nose tip and see if it looks blotchy or crusty. I have seen ringworms on a scalp before, and this is definitely what it sounds like. And ringworms do spread. If you will srub the spots really good and sorta "scratch" off the top layer of flaky skin before applying the cream, they should heal a little faster, hopefully preventing them from spreading. My friend did this with her little boy and it helps. Good Luck!