I understand. At least for me, this was a phase. Lots of indifference and even some resentment at first. It just takes time to get past this. You just have to be strong. Yes, you are carrying all the load right now. And, yes, it gets heavy at times. But, for me, I have to keep trying until I can tell my children I did everything I could to save the M. And mean it.
See what retro brings. We all know, there are no guarantees.
Focus on you. This always helped me when I was in a low spot (still have them). You have to be the one to meet yoir needs right now.