Dependency or Co-Dependency

Following up on an earlier story covered widely elsewhere, the Associated Press reports,

A man whose girlfriend authorities say spent nearly two years in a bathroom in their house, sitting on the toilet so long that the seat adhered to her body, has been charged with mistreatment of a dependent adult....

"I looked at the statutes and spoke to the attorney general's office," [Ness County Attorney Craig Crosswhite] said. "This was a very unusual set of circumstances, and this is the law that most closely applied to the situation."

I guess there are no laws that directly apply to getting stuck on a toilet seat. But it seems to me like a charge of Co-dependency in the First Degree would fit best.