So, a year has passed? Electrolysis is a very safe procedure. Scarring is rare to very rare if it is done by a professional. You had TEMPORARY skin HEALING side effects, which is normal for some. They are short-lived /gone within hours, to days to weeks. Scarring can’t show up until many months later, that is, if you had had repeated poor treatment. Electrolysis cannot interfere with smiling. It does not cause fat loss on your chin. Tingling sensations do not occur on your teeth or chin or lip after one receives electrolysis.
It would be advisable for you to see a physician to evaluate your complaints for other causes of the deficits you described (can’t smile, tingling, fat loss on your chin). Scarring is possible, but not likely, so that is about all I can see that could be related to your electrolysis story. You may have something else going on that can be diagnosed and treated medically.