am I going to get screwed????

if i had to sell the house i could not afford to live anywhere else. i cant get a mortgage big enough for a house that i live in and renting is twice what i pay for the mortgage. i cant down size cos there is nothing smaller than what i live in now except a bedsit but i need 3 bedrooms, although the kids are 20 and 17 (full time education)the are still dependants as they cant afford to live anywhere else because of house prices and high rents. one option was to re mortgage, pay her out but that means a 20 year mortgage paying 50% more than i am now, as she has not paid anything towards the debts she owe me approx £6k this would pay the arrears and get me straight, she has been told by her solicitor that she is entitled to 50% but she is not paying 50% of the debts. i have struggled for 12 months to keep a roof over our heads while she is going on holidays, weekends away and nights out. she sold her car and bought another one in his name so he now has 2 cars. the house is in his name and the bills are in hers so on paper it looks like she as nothing. he conned his wife out of there savings by saying they would buy an house as an investment and sell when they retire. when he left his wife she said she wants half the house but it was in his name. i think if she does not get the money they want he will kick her out then she as no where to live and all the bills in her name and that will affect what is mine then when she has not got to pay me anything they will reconcile, it has been a scam full 12 months prior to the separation, getting me to sign on a joint loan which was in her name only, running up the credit card which was in my name ( if her name was on it there would be more debt. in the mean time he was working on his wife to sell her business to invest in property. its all been a scam but that wont stand up in court. she was nasty to everyone and is now on her 3rd job since she left each one earning less than the one before, her wage as decreased £100 p w no doubt she will go back to her previous job once it as been sorted out