Looking for story – innocent girl stays with BDSM couple in mountains

Hi. Looking for an erotic story I read a while ago, I think it may have been on Literotica. It was about an innocent, naive girl who moved in with a couple who lived in the mountains somewhere, it spanned over a long period of time like 6month+. Whilst staying with them she attended college/school nearby and they gave her increasingly more rules to follow. I think at one point they caught her masturbating without permission on a camera in her room that she wasn’t aware of.