I'm happy that you have asked me to assist you with your child and hope that you can benefit from my many years of helping parents like you.
It might be worthwhile having her doctor check her hormone levels: thyroid, estrogen, FSH, LH, etc. There are some ovary conditions that can cause overproduction of hormones, including testosterone-like hormones, that can cause hirsutism.
This can occur regardless of whether she has started her periods.
Just have her doctor do a good physical exam and check where she is in puberty and her hormones and if necessary she can be referred to a gynecologist for further evaluation.