How you respond to spiritual overtures and invitations from other people is up to you; something that personal and private only you can judge. But these days you have a lot on your mind and you really need safe people to talk to in your local area.
Are these church activists the kind of safe people you need? That remains to be seen. I would be careful about anyone when you're in such a fragile state emotionally; that makes you easier to manipulate. But at the same time I would not shut out the world either.
Like so many other things in life this one is a matter of hitting the sense of balance that's right for you. What the way forward is I'm not sure, but certainly there is nothing wrong with wanting good safe friends in your life.
Nobody living can ever stop me
As I go walking my freedom highway.
Nobody living can make me turn back:
This land was made for you and me. (Woody Guthrie)