Sounds to me like the boyfriend kept her there. Probably one of those jealous control freaks. And after two years, he realizes that she needs major medical attention, so he called the officials made up a lie. In the article, it mentioned that her legs atrophed, so now she's disabled and probably can no longer walk. Either that, or she was already disabled and the boyfriend decided to leave her on the toilet.
I hope the officials do some more investigation on this.