Whoops, very sorry for the late reply!
The only real problem I had with the ending was that staying with Luna was disappointing. There wasn't much build up to it, but I was more upset with the fact that it went in a different direction than I expected. I understand not having a totally happy ending, but if this was your intention with the themes, I think it could be communicated better. Because I'm thinking, what was all the special connection about if it's just gonna end this way?
The other ending was much better. I think more time with the spouse could be nice, but I think going back to Luna for a visit while noticing that something is off in the forest (or maybe meeting Luna's guardian?) might be a better cliffhanger since the hopeful thing for this ending is a bit too unlikely.
Anyway, I'm not sure if my ramblings are of any help, but I just really liked your story! :3