Have you recently changed detergents, soaps, or lotions? Perhaps she is having an allergic reaction to something. The other possibility is pituriasis rosea. I had it once. It made me look hideous and extremely exhausted. It's kind of like chicken pox meets mononucleosis. It's a virus. I had to ride it out. Yuck.
Yes such skin lesions are many times not diagnosed properly and you end up with it recovering naturally and the medicines shall be of not that good help. I would suggest you to consult a Dermatologist for the same problem and you will be guided better.
She actually needs to be seen by a dermatologist. Do not ignore them before it gets complicated search for a free clinic in your area. or give your location details such that other people can search for free clinic in your area where you can take her for treatment.