It appears you went offline without seeing my request for more information. while there is no way to be certain based only on the available information, the symptoms you're seeing may indicate a condition in the urinary/reproductive organs. When the fur on the inside of the hid legs is the only area affected by fur loss, it usually means the rabbit has urine leaking during sleep and/or throughout the day, rather than that she is not cleaning herself. The urine dries the skin, and eventually the ammonia in it even burns the skin. This is called urine scald. Urine leakage can be caused by infection, bladder or kidney stones, diabetes, tumors, kidney disease, or a condition called sludge.
She needs to be seen by a vet to determine the cause of the problem and provide proper treatment. This link will take you to a directory of rabbit vets:
In the meantime, you can wipe the area with a warm wet cloth. Petroleum jelly (such as Vaseline) can be put on in a thin layer to protect and soothe the skin. Bathing a rabbit is never a good diea. It is a shock to their system, and they often become ill after a bath.
If you have more questions, let me know by clicking on REPLY. I hope your rabbit will quickly recover.
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