Thanks bluerain. I plan on detaching as much as I can now.
To seperate finances is a bit hard, cause I don't want to pay the whole mortgage for the next x number of years, and we sell it for a profit and she makes more money from the sale.

I'm not going to offer any support with things (she called me on Friday asking if I could pick our son up earlier cause she had to do something. Stupid me said ok) that's the support that I was talking about.

Going to have to make her see what it will be like as a single mother. Might be hard for her to realise cause we were living with her parents, so I don't think she'll be moving out any time soon. Her mum will give her alot of support.