When I am so sad because my addicts are miserable, what helps me is thinking that maybe this is the time their misery will drive them to recovery. This helps me to respond with compassion yet not do anything to ease their situation. I know that I can't make it all better & anything I can do may just prolong their misery.
It is hard, it hurts but I think this is the only sane and helpful attitude.
I might add that I've found they're usually exaggerating.