In a nutshell: SIL (DH's sister) is getting married abroad later in the year. MIL doesn't like traveling and doesn't want to go, but has told SIL she is going, and is talking as if she's going (talking about getting a dress etc). However, she has told me that she's not actually planning on going, as she doesn't want to travel. SIL will be devastated; MIL is not telling her ahead of time basically because she doesn't want to deal with SIL huffing etc. (SIL is a bit of a drama llama at the best of times, but I totally understand how upsetting this will be for her).
I was telling a friend (who doesn't know them) about this, and she reckoned I needed to try to get DH to have words with one or the other, so that SIL knows at least that her mum isn't planning on coming to her wedding. As my friend said, this would allow her to decide whether it's worth moving the wedding to somewhere local, or at least to get the upset over and done with well before the wedding, rather than potentially having the day ruined.
I really don't think it's my place to say anything; I told DH about it and he didn't want to say anything either (although, having been brought up with a LOT of drama, he avoids situations like this whenever he can. So I figured we'd stay out of it. But my friend was so insistent about it that I started doubting myself, and thought I'd put it out there to get some other opinions!
So, should I be encouraging DH to talk with one or both them about this?