Dsis has been using drugs for the last 20 years at least and subsequently has lurched from one disaster to another. Dparents have, without fail, been ultra supportive and picked up the pieces every time. She is like a leech sucking life and happiness from them but all she has to do is a false apology and a promise that she will turn her life around and all is forgiven. I have always supported my Dparents and tried really hard to have some sort of relationship with dsis, whilst massively struggling more and more to forgive her. After her latest disaster I am finding it impossible to even talk to her. Yet again Parent's are standing by her. Trouble is she lives with them and is on their mind all the time. I cannot bear to hurt D parents as they have to put up with so much crap but I am just at the end of the road with dsis this time. It's been going on too long. We're in our 40s now. D parents should be enjoying their 70s. How do I do this and maintain my relationship with my lovely mum and dad?