Be aware that if you bring your wife to the UK as a visitor then she stands a good chance of being denied entry for having immigrant intent. Lying and saying you are just on holiday is not a good idea, and as a visitor she can't work. And she cannot adjust status to that of spouse while in the UK on...

You might want to consider joining www.americanexpats.co.uk The UK Immigration authorities will not care about your wife's medical requirements (for the moment anyway--unless the Tories have their way)! It seems reasonable that your father is offering you a room with him until you get on your feet s...