Extinction burst is what narcissistic people do when they finally realise they've lost control of the situation or person.

I think OP was pretty clear that his cousin should have been aware of the mom’s bat sh*t crazy behavior.  Also, if OP opened the door before, I can almost guarantee that the mom would attempt to barge into the house.

50:30 Dakota, ...my good brother in Christ...usual therapist tactics don't work with this level of crazy!! ...OP is probably afraid his mother will try something more awful, like frame his wife of a serious crime, going classical Karen in Victoria's Secret idea.

Why is it always on the person being wrong to be the bigger person? This mother is unhinged

Story 1, update 7: I would not give away the food. You don't know if she put something in it!

If OP wants his mother to stop trying to contact him, he needs to see if he can file harassment charges against her. Maybe trespassing, too, if she starts peaking in their windows.

I’m screaming call the cops, dammit! Wow! Mom was attempting to break & enter before cousin even showed up. Glad they had cameras.

I think OP handled this correctly. Y’all are not in the situation.. he’s standing up for himself with a lying, manipulative parent.

I disagree with your take. I consult on bullying for social media. I'm sorry but OP is handling this correctly. You let the bully play it out and record it to give them their consequences period. They need it or they don't change their behavior. Fiance could have been direct but honestly, it would not have mattered, but her breaking into his house is actionable

He specifically says the cousin knew mom was crazy

My MIL tried to convince me to find and invite my mother that abandoned me at 11.
It only took one conversation (respectfully) to shut that down.

I'd love to know what OP & SO do for a living 😂 They aren't concerned about losing money from their wedding deposits, moving and THEN putting their home up for sale, etc But good for them, honestly. I'd find a way to move if I were dealing with a situation like that, as well.

They need to post no trespassing signs and tell mom no more trespassing

Party Monster story, If you are raised by crazy people your boundaries are very different than most people. Of course there comes a time when you realize that your family member(s) are behaving differently, but you still allow yourself to believe that they won’t get worse. Unfortunately when you put up Normal Boundaries, that’s often when their full spectrum of crazy comes out from the shadows!
It’s hard to explain and often why many children need therapy to wrap their head around the unbelievable nightmare that was their childhood.
The lengths my parents would go to were wild and they would occasionally wave their crazy flag proudly, only to blame me for people thinking that they were weird. 🤯
They’re both gone now and I will be clear, I hated their behavior, but still had love for them. They were both horribly abused as children and I understand why they were the way they were, but that didn’t make it okay. Blood doesn’t make family, love does.

While citrouille means pumpkin, it is also referring to the pumpkin type. In this case, it is referring to the pumpkin as ornamental, which is why the outside still looks good.

why is it always the groom's mother that's insane?

Farmer here we get pumpkins that lasts for almost a whole year. As long as the skin or a protective coating on the outside is not punctured it’s a extremely good form of seed protection

it's not a pumpkin.   it's a gourd .  those things last forever

“Extinction burst” is a term I learned in dog training.  It’s that last frantic fit of a behavior before giving up. So It’s flipping the light switch several times before accepting that the problem isn’t the switch.  It’s especially strong if the switch has been hinky for a while and flipping it multiple times typically eventually works.

46:44 immediately started using the crowbar

Those kind of pumpkins will eventually dry inside, leaving the seeds to rattle around in there, like a maraca or rattle.