It's hard when you are close to the family... But maybe your contact with her is not helping you.
I also felt gutted not keeping in touch w/some of his fam - but I knew I couldn't do so w/o hearing all about him- and that just felt like worse torture.
I thought too- how unfair- he just gets to move on like nothing. Maybe I should numb out too..
But I've gone no contact for 2 mos and it honestly has gotten much easier.