Arditinopolis

[Update] I [30M] made a huge mistake/oversight, and really hurt my cousin [24F] right before my wedding. How do I fix this?

So my original post didn't get a lot of attention, but I did get a bunch of hurtful truths that I needed to hear, and some good advice. I figured now that the honeymoon is over I should probably do an update.

The TL;DR version was that through a huge error, I accidentally left my cousin Molly out of the invites for my rehearsal dinner, while inviting all of my other cousins, making me and a__hole, and hurting her feelings.

Anyways, on to the update.

I was still trying to figure out how to apologize to Molly for my oversight and make it up to her. I had pretty much decided to grovel at her feet, and had planned to give up my plate at the rehearsal so she could come and eat and not be left out, and was bouncing ideas off of my fiancee on maybe taking Molly out for lunch a few times after we got back from our honeymoon, because I really did want to repair the relationship.

Anyways, I was out running some last minute errands on Wednesday (had to pick up the tux) and when I came home, I found my fiancee sitting on the sofa, chatting with Molly like they were old friends. (They had only met on Monday at the family get-together my parents threw.)

My fiancee (let's call her Emily) stood up and said "So I told Molly the truth about the rehearsal dinner, and that when I was going through the guest list to bring the numbers down, I didn't recognize her name,...

AITA Because a coworker was fired for organizing and cleaning my desk without my permission?

Yes you read that right. People are mad at me at work. Let me explain.
So we all have cubicles with high walls that are textured where you can hang things. I suck at decor. While some coworkers including this lady kept their spaces looking like hotel rooms or whatever, mine wasn't bad but it was busy. It was set up so I could find everything I needed for work.

Well one day I come into work and all my papers are things were gone. I look in my cabinets and everything is neatly tucked away. I was a little taken aback and offended. I get to work an hour early so I immediately start searching for everything and putting everything back.

While im looking someone who is higher up, like an assistant manager walks by...whats strange is
1. Shes early too
2. She was walking all the way on my side of the floor where her desk is many rows from mine

So i really think she was there because she saw something after i left the night before
She asks me whats wrong. I tell her someone moved all my stuff. She then tells me to write the director about it.

So i write the email.

Remember, management APPROACHED me. I didn't go running to them.

I proceed to work. The lady comes in and doesn't say anything to me. At the end of the day I look in her cubicle and its cleaned out.

Now people are saying i got her fired. She talked to another coworker claiming...