A little back story

My mil has two kids my husband (Micah)

And his sister

(Madison)

A little bit about her is she drinks excessively but not to the point that's it's an issue with anything. It just is her choice hobby but it's enough for her to be considered an alcoholic

Her entire life, she has treated madison better than micah. And moreso when she and my husbands dad split. While she's never admitted it (I don't think she ever will because has never admitted her faults) we believe he's treated differently because looks a lot like his dad. And madison is clearly an image of her mom.

Madison is handed everything on a silver platter while micah and I are usually left in the dirt. When he and I got married she stated that we needed to move out and get a job. No issue I understand. And she said the same thing about maddie until she actually got married and backed out of kicking her out because apparently maddie couldnt handle the real world with her anxiety.

Mil and maddie work at 7-11 (convenience store) but different locations. Were having our gender reveal Saturday and maddie didnt have the day off so mil called maddies boss and pitched a fit til maddie got the day off.

She'll claim she has no money to help with gas every so often and then bitches about how we dont visit her. (we live and hour away) but will take maddie out to bars and out partying. While I understand its her money, she picks and chooses. She bought maddie a whole array of clothes jewelry and other things for Christmas but got micah a gift card to Starbucks (he doesnt drink coffee) because she didnt know what to get him.

When micahs dad got married he was about 8, and his stepmom (Stephanie) wasnt care free like his mom was. So growing up he always saw her as a mean step mom figure. How ever as he grew older, he realized she was only strict. she never put one child over the other. and she always had their best interest in mind. He became closer with her and considers her to be his mom.

With a lot of drama going on mil was attempting to brainwash micah and maddie to picking sides and my husband having a hippy mindset chooses not to deal with bs from either side. Maddie well....she listens to any bs mil spits out.

Now to the situation

She had recently been asking us (telling) us in a passive way that we should use her middle name if it's a girl (it is. we haven't revealed to them yet)

My husband has absolutely no intention of using her name at all. He is using his step moms middle name. (Elena)

The name will be Clementine Elena Marie Armstrong.

And i know for a fact shes going to pitch a fit about it

However she has been a wonderful mil other wise and i absolutely do not wanna keep her from this baby. So im not after that type of advice because that wasnt the issue. How do I handle her flipping out? What would you handle this yourself?