Pushy & overbearing sibling

I’ll be moving in 2 weeks, and currently 4 months pregnant. Husband and I decided months ago that we didn’t want a farewell party and will instead just make our rounds to say goodbye. Well, my MIL has been pushing it and promised that it’d be just like a thanksgiving-Family style with immediate members only, so we agreed. My sister decided this morning that she wanted to take it upon herself to go all out by renting tables, chairs, jumper and taco truck! Even going as far as telling me I need to find a dress so it can show my pregnant belly (I have no belly yet, still early) so I told her that it’s getting out of hand and it’s not what we want, it’s getting too large and every time I’ve voiced my concerns, she would rebuttal back. She kept pushing and saying “I’m renting this because it’s called good hospitality and people need to be comfortable. I’m renting a taco truck because I want to eat tacos! I’m renting a jumper because it’s for the kids!” So it’s all for her, on my moms expense. It really frustrated me and she was listening to me at all when I said I didn’t want or ask for this, so I called my mom. I specifically told my mom that I felt disrespected because they were doing things that I requested them not to. My mom goes and calls my sister and goes off on her saying I just called her crying. So now it’s super awkward. In the end; my sister apologized and agreed to cancel everything but finds her way to throws in little stabs like “I will never ever try to do anything nice for you ever again.” And although I know it seems like I’m ungrateful, honestly I’m just stressed. I have a lot of changes and things I’m dealing with, with my

pregnancy, with my work and with moving and the last thing I want is a party. I don’t want to make it awkward because I only have a few days left before I move, but I feel very uncomfortable. My sister is notorious for volunteering to throw a party then when the day comes, she does absolutely nothing but nap majority of the day then invited HER OWN friends over and gets belligerent drunk. Something I’m just not willing to deal with, honestly. In the end, I know this too will pass. She has apologized and I’m trying my best to not overthink it anymore but I just needed to let it out. She’s on her period so she’s at the peak of her PMS and my pregnant hormones are making me easily agitated- worst combo ever.