Taking action right now is probably low in your list of things you would like to do. You are hurting and as you said, grieving. These are not strong motivators for action (if they were wouldn't that be great!).
I find when I am down sometimes I just have to drag myself to whatever it is I need to do for myself. Might mean I'm not at my best on arrival, maybe I won't bother with any makeup and just run a brush through my hair but it's action, not words, not "I should".
Think of it this way, what could an Al-Anon meeting hurt? How could it make it worse? Well the truth is it really won't and there is a chance it could make you feel better and help you to start moving forward.
Why not give it a try.