MIL issues.. just making sure I’m not the crazy one..

I’m here to double check that I’m not fuckin crazy.. ima make this as short as possible! Back story I’ve been with my fiancé for almost 6 years now, me and his mother stopped getting along when we were only 6 months into the relationship.. no specific reason at all, it was little things she would get mad at like if he doesn’t answer the phone, she’ll call me to look for him but sometimes I won’t answer either.. just petty shit in the beginning.. the deeper me and my fiancé became the more she targeted me that I was “taking him away from his family”.. I tried long and hard for a good relationship with her, never ever did anything intentionally towards her.. I don’t have drama with anyone in my life BUT her so that should tell you that much. FAST FOWARD to today.. me and my fiancé now have two beautiful children.. 1 year old almost 2 and a 5 month old. Before I got pregnant with my first I haven’t talked to his mother in almost 2 years!!! My decision. But once I got pregnant I wanted peace, a family, my kids to have their grandma. We reunited me and my MIL we squashed everything and she was really good to me and I was good to her.. my DD made peace when we found out I was expecting.. over the last almost 2 years there’s only been a handful of issues me and my fiancé had with his mother.. where she’s upset bc my mother sees the baby more than her, she thinks me and my fiancé pick the wrong things to do on our free time without the kids, she thinks we fight too much around her (we’re not actually fighting all the time but the way I speak and he does might make it seem so but we’re not lol) . Now here is my LAST piece of patience I have with this woman.. she come over on a Friday, doesn’t necessarily ask me but I say ok bc she wants to stay at our house since her family is staying over hers. While she’s here I make her breakfast and dinner, shop a little to make sure I have drinks and snacks while she’s here… and yes she did clean my house and did my laundry!! I never ask her to, but I’m assuming she does it out of love and I appreciate it. The next day she wakes up and says she wants to go to her sisters house, that’s she wants us to go.. I tell her I don’t want to.. she says in exchange for cleaning she wants us to go…. (Guess it wasn’t outta love) Umm.. ok then. So we go.. FAST FOWARD that night she goes back to my house and my fiancé and I step out for a drink.. the same night she finds out her youngest son whose 17 went to a club and now he’s stuck bc his ride left him.. so she’s furious and calls me as we’re on our way back to the house, I have her on speaker and she goes OFF of how upset she is at her son.. then she says “I’m over everyone!! You and him fighting just everyone” my fiancé jumps in the convo and says DONT involve us.. we did nothing ur mad at your other son rn.. I calm him down and say don’t make it worst, I tell her I understand and we hang up.. I get to the house and she walks right passed us and gives us a dry cold “bye.” Once she left my fiancé texted her saying it’s not right to be disrespectful to me, that I didn’t even do anything and that I respect her and that she should do the same. she then starts texting back my fiancé “you’re a piece a shit son always have been” “don’t come to my funeral” “I’m dead to you you selfish bitch”…. Never have I ever seen a MOTHER talk to their seed that way. A day goes by and she texts us both together in a message, it was a long message but main points she said was “I’ma say things so you guys can marinate on this, Ashley I call you and he starts running his mouth to me and you’re quick to say you understand but you must’ve told him I was being disrespectful to you.. it seems like you actually like when he doesn’t speak to his family.. I’m the kids grandmother and I’ll always be the grandmother till the day I die and beyond, those kids need my live , THIS grandmas love” lmaoo crazy. And all in between she was calling us toxic, saying she’s done with us, we need to get help blah blah… BUT AS YOU SEE, IVE DONE NOTHING!! I never even said anything to this lady, if she’s mad at her son, she’s mad at me too lol.. but yes I responded to the message that I no longer care if we get along or not, my kids have their parents and that’s all they’ll ever need in this life… that got her furious but same pattern for years. So her bday comes up a week later.. and my fiancé sister try’s to ask him if she can pick up the kids to see her on her birthday.. we say no, there was no apology from her nor do we want our babies around TOXIC and someone who thinks that way about their mom. Idk what’s gonna be said about me around my babies.. don’t disrespect us, it’s a straight hell no! I can give 2 fucks about her birthday.. her son might forgive her for the things she said to him and me but I don’t have to.. AM I WRONG?! Pls tell me guys.. update his sister got in the middle texting me that’s she’s upset that the kids didn’t get to see her mom on her bday.. and is not right to keep them from “us”… meanwhile NO ONE SAID HIS SISTER CANT SEE THEM!! Has nothing to do with her and if she wanted to come over tomorrow she could ! AM I WRONG ?!!!