She wasn't able to get her to the vet but she did get her some type of meds for it. Apparently it's a case of the dog is allergic to grains but she won't eat grain free food.
I don't know why she thinks her dog has cancer but I know when my pitbull got cancer he went from 88lbs to 62lbs. I don't know if she can afford to get her dog to the vet. I will try to get her some oatmeal shampoo. Thank you for the advice.