Painful treatment by an old woman

A no-nonsense old woman with a sadistic mean streak, keeps a small back room surgery equipped with medical instruments. She brings in a girl for treatment. The girl undresses and then is instructed to lie on her examining table. The old woman then securely ties down the girl's arms and legs to the table with bandages and tape, assuring the girl not to be scared. Then at a slow and thorough pace, the old woman proceeds to work on the girl's vagina, eventually bringing the girl to tears.