You need to get that glider to a vet and have x-rays, urinalysis and fecal tests for parasites run. She needs to be placed in an e-collar, and a straw on her tail if using a satelite style e-collar. She needs pain meds, medication to treat for parasites (if she has them) and medication to treat for infection. Bite marks are ALWAYS susceptible to an infection. Crooked tail could indicate a break.
It DOES sound from your description that she is making the SM sound and in the initial stages of SMing. If you do not get it treated and prevent any further damage, she could SM enough to cause her own death.
GLIDERS DO NOT SM SIMPLY BECAUSE THEY ARE ALONE. They SM because they are in distress and/or pain. for SOME gliders, lonliness can cause significant distress, resulting in SM, but for most gliders, lonliness causes a whole host of OTHER health related problems. SMing should ALWAYS be taken very seriously and should ALWAYS be treated by a vet. Finding her a friend right now is not the most pressing concern. Finding her a vet with knowledge and experience IS.
Her level of bonding to you or to other gliders has absolutely no bearing on whether or not she deserves excellent health care - by a vet and by you after the vet visit. Rescuers treat difficult gliders for injury and illness all the time. It is much easier than dealing with the guilt and regret of loosing a glider because you didn't get it treated early enough. Just because she is eating and playing does NOT mean she is not in pain or discomfort. Please have her treated ASAP.
You are more than welcome to call me if you would like experienced advice or encouragement - esp. in regards to after-care and prevention. A vet visit is not an option, it is necessary for this little one.
Val 806-274-9177