Welcome to the forum. I am really glad to help you out. This could likely be due to an infection like a boil. There are possibilities of bleeding from the boil and then the scab formation.
In most likelihood, it should heal. However, in case, it persists, then she needs to consult a dermatologist. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.
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