Good post and advise Smileless as always 
Gamma this is your thread and I know a lot of the posts on here are unkind and hard to hear, but the ones you want to hear are those from fellow estranged GM on here like Smileless & myself, that understand your pain.
What happens is, the more they push you away, the more you push to see them, resulting in a deadlock. Family & friends said the same to me, about staying away from them, but when they've been a big part of your life, all of their lives, you love them with all of your heart & soul, and are bewildered as to what you have done wrong, it's hard to follow the advise. On one hand, yes it is best to stay away, but the longer you are not part of their lives, the easier it is for them to keep it that way, very cruel, very unkind, very heartless!
For you Gamma 
By the way posters, the OP story is at the top of each page, so it's not necessary to repost it, just reply & put your comments & hopefully advise in.