Going dark and GAL might snap her back to reality a bit when she realizes how much she still interacts with me and likes having me around. It almost seems like that should be the start followed by 180s once she's on boardm with rebuilding our relationship.
Dude, you GAL, 180, and go dark for you. Its not going to snap her back into "reality". I struggled with this atfirst and my sich is similar to yours in that the W says shes sticking around just for our son.
Like you i did everything at first to "fix" the marriage. Now i do it to stay sane, be happy with myself, be my own man etc. If that attracts my W back to me at the end of the day then okay but thats not the goal. In others words im taking my balls back and being the man.
As for your sister situation, i dont envy you or have any wisdom to give cause im kinda new here too. I must say you are exceptionally patient with all her affairs, i'd be a seething volcano, an angel of retribution. I'd probably kick her out the house and call the sister. But hey thats me.
Me31 W31 M11yrs S6yrs 23Mar16-BD 9Apr16-W admitted EA w boss. 27Jun16-W Changed job and promised NC w OM. 14Jul16-Continued contact w OM.Start of Separation. 24May17-Divorced.