Children's uncle's room on the second floor where parents can never enter

The children's room on the second floor, when my parents were never able to enter... Even though it's called a child, an old man over 40 years old is shut in the room of a child. A girl is trapped there, without anyone noticing. The girl's spirit is broken as she is desperately put into being a sex slave every day. Over the course of three years, the girl becomes an addict who no longer resists and becomes brainwashed and cums over and over again with deep throats and fingering, and loses a lot of incontinence! She has now become a masochistic woman who has had fun having sex with men...