My sister had progressive severe hearing loss, severe vertigo, and tinnitus. She resisted any treatment until she was completely incapacitated. Friends dragged

My sister had progressive severe hearing loss, severe vertigo, and tinnitus. She resisted any treatment until she was completely incapacitated. Friends dragged her to an ER where she was scanned for tumors. Follow-up visits to ENTs (ear, nose, throat) confirmed substantial hear loss, but could not identify a cause. Despite skepticism, she went to a chiropractor and has started recovering her hearing (measured by ENT as 30 decibel improvement) and balance. About a week ago, she was adjusted and within 2 minutes noticed her hearing improve. She still has a long way to go though.