I'm sorry for your loss.
I'm going through this right now too. My mother is losing her battle with cancer and I am her caregiver. I try to remember that using food as a drug to smother my feelings is not going to help me survive this nor change the circumstances in any way. Even so, I am not always successful especially when hormones are involved. So I just pick myself back up after each binge episode and go back to Primal.
Hang in there.