😆 Not what you intended, but I could see you (ok, not you, since I’ve got no idea how you look like, but some random person really) gesturing and making faces, while getting it all out there.
Ok, now to the serious answer.
I think they’re going to show us sometime (it may not be this season, but who knows) how Belle ended up locked up. I think we can be quite sure she was imprisoned in FTL and not just in SB.
I believe this scene in the pub was just after Rumpel kicked her out of the castle, she probably vented a lot on her way to the village and arriving there she just needed someplace to sit, think and let everything sink in. Much like all the people in SB, who go to Granny’s. (Anyone realised yet, that they show them drinking alcohol a LOT? Practically every episode there someone in need for a drink.)
On why Belle didn’t go back: She guessed that at that moment she wouldn’t be able to do anything, to convince him otherwise. Rumple’s way too stubborn. She may have come back sometime later, but she was then captured and could not go.