AITA for cancelling my vacation with my 2 kids because my wife wanted to bring her Mother?

So, this is my first time posting on Reddit. I saw a lot of judgement on parents postings on this sub and still decided to post as I'm very confused on what to do.<br>So last year I planned a 2 weeks car trip with my 2 kids P (8F) and B (6F) to go to a State where I used to live when I was a kid. It was a dream of mine to take my kids to all the places where I used to go when I was a kid. I took the time of a trip last year and this year and saved for the 4 of us to go. <br>In june my wife told me that she doesn't want to go on the trip because it's too long in a car for her, but that she would take us to the beach instead for a week, and I agreed because we didn't talk a lot about the road trip and she was paid instead of me for this vacation so it wasn't a big deal. She also told me that she would pay for the trip and she would take care of our girls too.<br>Last january, I decided to talk to my girls about the trip and told them everything. They were super excited and wanted to do it so we all agreed and told my wife that was my plan. That's all.<br>Then last week, I saw a post on my wife's fb wall where she posted a picture of new luggage bags P and B bought for the trip. I asked her why she posted it and she said "I don't know. Nothing wrong right?". I told her that yes, there is something wrong because she didn't want to go on the trip with us. She told me that I'm a jerk for putting her down. For me, it was a thing because she didn't want to go and didn't let me talk to my girls about it, and I felt she was trying to make me look bad and put a guilt trip on me to make the girls cancel the trip and she told them it was her idea for them to buy luggage so they could get ready. I asked her wtf was going on and we had a fight.<br>We got to talk a day after and she told me she didn't like to be "pushed down" and she wanted to go on the trip because she thought she missed something important when I was talking with the girls about it and she thought it was a good idea after all. I told her I was happy she was going but she had to get ready by herself and she said ok. I asked the girls if they wanted her to come and they were happy for her to come and I told her so. She told me that she was going to tell her mother about the trip so she could get ready too and I holded my horses and didn't answered her. I just told her we had nothing else to talk about. I sent her a text later and told her I didn't like to take her mother on the trip and she called me to tell me what was going on. I told her that I was planning to go with my 2 girls and her for more than a year and a lot of people were going to miss her mother and they were going to ask her why her mother wasn't going. Also, I told her I didn't want to be with her mom because I don't like her and she's mean with me and my daughters so I wanted her to not come. My wife told me she hated me and she wanted to divorce me. I told her if she wanted to take her mom on the trip, I would take my girls on my own because I didn't want her mom to go on my vacation and she called me an asshole and told me I was splitting my family apart and she would sue me for it. Now, she's trying to get her friends and family to talk me into letting her mom in the car because "we're a family and families go on vacation together" but I still don't want to let her go because I don't want her to go and I don't want my wife to feel like I'm a jerk because I don't like her mom.<br>So, AITA?<br><br>EDIT: Thank you everyone for your comments. I didn't want to answer anything because I was lost but I think with your answers, I have a solution in mind. Thank you. I'm not divorcing my wife but she will anyway because I told her she wasn't coming. Also, I was right, MIL doesn't like me or my girls and she doesn't like for me to spend money on my girls. Yes, my wife is codependent and I have no problem letting MIL die alone when the time comes.