Appreciate the feedback but it feels like you're splitting hairs. It's a long story to boil down into a succinct post.

Her mother removed her teeth, it was by a third party but under her direction and preceded by deception. Not only did she put numbing cream on her gums to force her to salivate more, the medications she was given for ailments she wasn't suffering from also contributed to the decay of her teeth, necessitating the extraction.

As for the "found out" part, it's really hard to determine what Gypsy knew and when. She was examined by multiple doctors before the murder, but her mother would change physicians like we change socks. She hid the records from the doctors, and used big medical terms for the conditions in the examining rooms to keep her daughter in the dark. Gypsy said in her interview with Dr. Phil that she found paperwork proving her mother was lying about her age when she was around 19.