Marle, I think I'd pray on it and see if she is still clean and wanting the meeting when she gets back. She's pretty early in recovery (4 days) to be very stable yet, and if she's not clean she probably won't call, and it she is clean then all the better.
When I was unsure and feeling like you are, I met my son at a neutral place, maybe a restaurant near a park where we could walk for a while, and I kept the meetings brief, maybe an hour or two and had an escape plan/story for if I wanted to leave earlier.
I think it's wonderful that your prayer was answered and you heard from her and it sounds like she is really trying. That's such a good sign, when they try.
Sending special hugs and lotsa prayers that she can stay on the better path and find her way back.
Hugs from the old gal in bunny slippers.
