Invite brothers wife to bachelorette?

Hi there,


I would love to hear all your thoughts about whether it is expected to invite your siblings spouses to the bachelorette party!
A little backstory..

My sister is hosting and we are inviting a handful of close friends and two of my closest cousins.
I have two future sisters in law who live across the country. I was not planning to invite them as I highly doubt they would want to make a trip out here twice this summer but if I invite my brothers wife I would give them a courtesy invite with the disclaimer that it’s not expected they attend.
My brothers wife invited us to her bachelorette last year but it was across the country and we didn’t make it. My sister and I did end up hosting a local party for her and my brother for people that couldn’t attend. Truthfully, I hadn’t considered inviting her since I wasn’t planning to invite my FSIL. We aren’t super close but we do have a nice relationship and Id like to keep it that way.
I don’t want to impose a party where she doesn’t know many people on her but I also don’t want to potentially upset her. Any thoughts would be appreciated!
Thank you!