AIO - NIGHTMARE SISTER IN LAW

Pls read there is such good tea in here and ill keep reposting until i get traction.

I have had issues with this girl since before her and my future BIL were dating. This girl is a f-ing nightmare. Upon meeting her she lied about everything. For no reason. She is one of those people who always has to have it worse and has a guttural craving for attention. I told her about how my sister (12 at the time) was diagnosed with cancer, and she had to one up me by telling me both her parents were killed and that her cousin was just r-ped and killed in an alley the day before. Come to find out, none of that is true and she doesn't recall ever saying that to me. Her family apparently rose from the dead. That was the first lie and my first impression of her - not off to a great start. 

On thanksgiving 2023, just days after they started dating, I was mid-friend breakup and she took me asking for advice on how to approach the situation, turned it around and went out of her way to reach out to this girl (she didnt know her) and was talking shit about me and lying about the things i said. Unfortunately for her, I ALWAYS record my interactions with people if it's a serious matter (one way consent state) and I was able to send that over to said friend when I was confronted and proved to her that none of what she said actually happened and had explained past drama with my SIL. Call it retaliation or whatever, but recording things has genuinely got me out of so many sticky situations. I use it as a form of self defense.

January 2024 rolls around and at the time, my entire family had flown in because my sister was on the verge of death. She knew this, she had seen her in the hospital during her chemo. She still went ahead and had a lot to say to my Fiancee about me not being around for holidays, making absolutely heinous comments about my little sister.. “She's literally fine. My cousin had leukemia in her 20s and nothing happened.” “I'm sure she's just dramatic like her sister, her sister is fine. she needs to be with this side of the family too” and that was excused by my BIL and MIL because “oh she just had too much to drink and doesn't know how to communicate frustrations.” …. SHE IS 35 YEARS OLD. yet another thing that left a bad taste in my mouth. 

Fast forward to the past few months, there has been so much more BS but we don't have time for that. Everything has revolved around her. Any time something good or bad has happened in my life, it is like she genuinely can not handle it and fabricates some big lie and inevitably gets caught in it then just gaslights the fuck out of me and my fiancee. She genuinely makes me feel like i am losing my mind because she's just that good at manipulation.

HERES THE PIPING HOT TEA.

I wake up to a text from her one day, that said we should get together for dinner because they have news to share, so i immediately get nauseous… because this is literally 4 months before my wedding and we never do anything together. She decides to have an entire “family barbecue” to let us all know that due to her age, they are doing egg retrieval and saving up to do IVF. I immediately was clutching my fists almost in tears. I had been waiting for the next thing to happen, because I could feel in my blood that things have been too calm for a while with her. I told my fiancee that they had better not do it before our wedding because IMO that is not okay… 

Last week, just at the 2.5 months away mark, my sister called me and told me she needs to talk and it's serious. My MIL told my sister and my mother that they are trying to do this sooner, so they can get engaged, elope, and start IVF cycles. My MIL SPECIFICALLY TOLD THEM NOT TO TELL ME, YET DOESNT SEE AN ISSUE. He also went ahead and asked (im glad he asked) my Fiancee if he could propose in October - the same month we started dating, got engaged, AND OUR WEDDING. Obviously he said F no, but I don't know the extent of the conversation because I was so angry I stopped listening. They have already taken over my wedding stuff by making this "announcement" and they're already talking about it as much as they can at my wedding related events, and I already know they will be talking about it to all the family at the wedding, and I am NOT okay with that. All I want is to have our fucking moment. I've never been one to really want attention, but like I'm getting married in a few months and for once would love things to be about us instead. Just for a few more months. This all just seems so targeted timing wise because of the past few years of her behavior and the fact they've repeatedly said they don't want kids. As much as i am trying to be a bigger person, this is my fucking year. I so badly want them to wait. I DONT EVEN WANT THEM TO DO IT THIS YEAR!!!!! I told my fiancee that if they do anything before the wedding, or even speak about this at the wedding, i will be completely cutting them out my life, she will be excluded from everything and I wont be around the family when she's there.

Am i overreacting?