I am meeting with my mum and sisters on Sunday for a Mother's Day lunch. I don't get to see them as often as I'd probably like, and have been really looking forward to a catch-up over a drink and some good food.
I am a single mum, but both my sisters are married and will be bringing their mothers-in-law along. Neither mentioned it to me, but it's what happened last time and it's fine. I'd rather it was just me, my mum and my sisters but it's just one of those things.
Tonight I have found out that my sister's sister-in-law is coming, and I'm feeling a bit 
about it. I don't know these people really and my sister's SIL is a bit of a nightmare ... my sister is never done moaning about her!
I get that my sister is trying to do a nice thing, and she is inclusive by nature (on the other hand, I would arrange to see in-laws separately in my own time). However I would have expected her to say to me 'X and X are joining us on Sunday, are you ok with that?' That's all it would have taken for me to be ok with it. But it's the assumption that annoys me. I found out they were coming from someone else entirely.
So tonight I messaged my sister and point out that it would have been good if she'd told me they were coming. Her response was to shut me down, saying that she didn't think for one minute that it would be an issue, and that I could 'sit at the other end of the table'. 
I replied that it's nice to acknowledge how someone is feeling about a situation, rather than steamroll over them (which my sister has form for doing).
Am I being precious and uptight, or do I have a point? It's my Mother's Day too!! 