I think what happens is the "healing" aspect also includes "living" and "changing with life" aspects. That is true with therapy. When your path of life is suddenly, or greatly altered and there are others in your life at the time, this also causes a big shift for them - or not. They might agree to try and go along for a time, but if they aren't up to shifting greatly also, it isn't going to work.

Since you aren't the one who can change quickly (again?) and another won't... then it's not the one who can't that is refusing to try, imo. My marriage of 26 years went straight down the tube after my injury accident that left me disabled.

I don't like to use the word "fault" and I sense that it is used to take the focus off of the one using it.

TC