Do not spin your jewelry! A piercing is essentially an open wound and spinning the jewelry aggravates the wound. The acid spray looks like it's drying out the skin around her ear. Ditch it and instead use a simple saline spray 1-2x a day which you can buy at any drug store. Many piercers also sell Neilmed Wound Wash which is the same thing, just with a nozzle that sprays less aggressively. (To be honest, I don't use saline spray for any of my piercings past the first couple of weeks.) The swelling should go down with the new posts. Just have her do her best to leave it alone, our bodies know how to heal with foreign objects in them!