AITA for telling my SIL that real life isn't the parent trap and she is a nasty little criminal?
My husband and I are currently staying with his mom, because rent in in our area is insane and she wanted to help us save for a house. He has a 14 year old sister who I will call "Lily"
I genuinely feel for Lily. She took her parents' divorce very hard, and they don't make it any easier for her. MIL and Lily's dad "Henry" had a very messy divorce and are clearly still in love with each other, and this has been a year and a half of constant drama.
Henry acts like an overgrown child and desperately wants MIL to pay attention to him. He will do anything to piss her off just for a reaction. MIL is still wayyyy to involved in his life and she cannot stand that he has "moved on" (lmao this man has not moved on) Henry began dating "Lauren" basically right away. Yet he has basically admitted while drunk that he doesn't really like her, and he doesn't find her attractive because she looks too fake. Also I strongly believe he and MIL still sleep together from time to time.
They both underestimate how confusing this is to Lily, and I really do feel for her. Anyway Lily has begun "pranking" Lauren. These pranks are mean spirited and unfunny, but Henry insists that she is just a little kid and should not be punished.
This past weekend Henry and Lauren got married (on MILs birthday lmao) Lily was supposed to attend the wedding, spend the weekend with her cousins, and come home Monday morning, but Saturday night we woke up to banging on the door and Henry yelling at MIL to get up and take her child. He said Lily along with his nephew, played a "prank" on Lauren and pushed her in the pool while they were taking their wedding pictures in front of all of their guests.
Lily was smirking and refused to apologize to her dad. MIL did what she always does and said it wasn't Lily's fault. The next day Lily was telling my husband how funny it was. She then said that Henry knows he made a mistake and he was talking about MIL all morning.
At this point I couldn't bite my tongue anymore. I told Lily that real life isn't the parent trap, her parents aren't getting back together (honestly deep down I think they will but thats besides the point), and that she isn't cute of funny. She is a nasty little criminal who assaulted a woman on the most important day of her life.
MIL heard this from the other room and lost her shit. She told me to get out of her house and never speak to her child like that again. My husband eventually calmed her down, but MIL still says we need to be out within 30 days, because no one who calls her daughter names is going to live under her roof.