I just feel sad for women who are being controlled/abused by their husbands. Not keeping your promise is definitely shitty, but she's a victim of the situation as well and she might not be able to escape that situation so easily.

I do agree that it's shitty to make promises that you can't keep, especially if they were helped by that person before. However, my point is that you also don't know exactly why she couldn't go through with it. Maybe her husband is really controlling and that's why she couldn't keep her promise. Of course she should have talked to him about it before making that promise, but people make mistakes all the time.

Anyway, you know her better than me of course, so maybe the whole friendship was just you being there for her and not the other way around. Just from that one story I can't really make any conclusions basically.

I don't necessarily see how that acquaintance is in the wrong there. She chose her husband over an acquaintance, which isn't really that strange. She probably wanted to help you, but couldn't because her husband wasn't comfortable. Unless you know for sure that she's lying about that, I don't think you can blame her.