I can totally relate to your post. It´s not a easy thing to just move on without them, it´s your family, not a bad friend you simply can ignore and after a time even forget. If your family is really bad and they know about it and don´t even care, then it´s very harmful for you off course but in this case it´s more like you are both having issues in your lives and none of you can help the other one? The simple rule maybe, just do things that not expect too much, don´t help them and don´t go to them for support.
I live hours away from my family, when I got diagnosed with a chronical disease they didn´t ask me that much about it, I think they just didn´t know too much about it and just left it all with me, like "well, let´s leave it to the doctors". Second, when I got my AS-diagnosis they never mention it either, they just let me have it and ignore it all together, maybe they don´t even believe it and maybe they also feel a bit ashamed over it. That´s what I´m feeling.
I have been through a hell of a lot in my life, but I have learned that they are not there when I need them to listen, they can´t simply handle serious stuff, they make me feel like I´m annoying, whining, attentionseeker, so my only help has been my spouse or someone I have to pay, like a doctor or a psychologist. It´s sad, but I don´t think I´m alone with that experience.
They hardest part with lack of support from family is that is SO hard to also GIVE support to others, not because lack of empathy but rarely given it in return.
_________________
Beauty is fleeting, but a rent-controlled apartment overlooking the city is forever