your legal guy is fucking you over mate

get a second onion on the matter

and, if she's living in the house she shoudl be paying half the mortgage

did you get a written agreement that she would get out what she put in and you would get out what you put in as a % of the house when it comes to selling it? without this you're fucked with both names on the deeds

althoughy ou culd honestly claim that she put you up to it and falsified her version of things to make it look like you could aford the mortgage with both your earnings etc, but bin your brief once you've found a decent one, this ones already spending his cut of your house