Inviting my husband’s parents to the baby shower...

So, let me give you some background. His mother was the one that wanted to do my Gender Reveal (to clear some air, it was just a party for our two families to meet since him and I eloped alone because we felt the wedding should have been just us two). She made it a huge deal for her to pick the date, for her to pick the location, but to have my mother cover the food, decorations, and location. My mom agreed so I shrugged it off and let it be.

The day before the party, I tell her, “hey, my mom wants to know what time y’all will be there to help set up?” She responds, “oh, we’re not going to be able to make it. Something came up.”

It’s the day of the party and I recheck all the rsvps, (it was an electronic invitation that she put together btw) and of course his entire family switched over their rspvs to ‘no’ and didn’t show up. It was just my family, my husband, and me. I was furious. Livid. Appalled. My mother had set up a beautiful party, with enough food for everyone who would have been there.

So fast forward, a month or two and it turns out my in-laws told my husbands entire family that it was cancelled and not to show up.

Another timeline jump, I’m now 27 weeks pregnant and trying to plan my baby shower. I guess I’m trying to ask y’all’s opinion as to if I should even invite them to the baby shower. I really just want to know if I’m being too petty, or if I’m not being protective enough of my unborn child’s feelings. I don’t want him to know what it’s like to be flaked out on by his own family, I want him to know that real family doesn’t do that. So I need y’all’s help. Should I be the bigger person, or stand my ground?