Looking for a story I read a long time ago [non con] Help me find it?

The story was about a woman that had agreed to house sit for this man she met in a restaurant.

She was given instructions to not go into the basement. She goes into the basement, gets locked in and sees all these different sex toy machines about. She’s told by a recording that if she wants to leave she has to use the machines. Well they end up brainwashing her to be the sex slave of this other guy that payed original guy to bring him this girl.