Did she want help setting out literature, or wanted you to take over maintaining the literature inventory?
Just curious.
It sounds as though you are not ready yet to be of service, and that is just fine.
You need to work on your recovery first.
I will say, though, that I took great joy in being of service to my home group, and it helped me a lot within my recovery.
I was a general rep for the group and I also chaired frequently.
So I hope at some point, when you are feeling steadier, you will think about a service position.
Hang in there.