Move them too. No good comes out of that place.
Maybe when (God forbid) her father passes. He's ill on many different levels and has a team of doctors that know him and it would be impossible, at this late stage to relocate and find all the doctors he would need.
Upon his demise, I'm confident my mother in law would relocate. I'm sure you understand that while I don't want to be here in Maryland, I'm not looking forward to my wife's father passing away either to facilitate the move.