I don’t want to go to this wedding

Okay so my husbands “bestfriend” is getting married in September.... I don’t want to go! I don’t like his soon to be wife, and the reason best friend is hyphenated is because they’ve only met up 4 times in 3 years and live 15 mins away from us because his fiancé doesn’t allow him to go out. I don’t agree with the way she controls him! I could never sit here and tell my Husband that he may or may not go out and if he does he has a list of chores to do and he has to put the kids down himself and then he may possibly go out! That’s outrageous to me! Obviously if it were a constant thing then I’d be putting my foot down but they were trying to meet up for maximum an hour and one beer every 5/6 months and that Was a big no to this women! Like what the heck?!? It’s a partnership not she’s the one who makes the rules and controls this dude... anyways, there were problems in the beginning of my relationship where she was constantly hitting on my so with me standing right there and would tell my so’s best friend that it was him... LIKE WHAT. Shes the only good parent to exist and is very judgmental to anyone else... her wedding is being held someone where you can’t call a cab to pick you up and it’s $200 per plate! We’re so tight of money that We can’t be forking our $400 just to go to some wedding... I’m all for him going! He’s going to be the best man, so I’ll be sitting by myself the entire time. I don’t think it’s insane if I don’t go, I just don’t want to because it’s a lot of money, plus a baby sitter and finding a ride home and I just don’t like her or even care for her! He’s bent out of shape about this and I get it, I really do. But I don’t want to sit at a wedding by myself, pay $200 just to eat some crappy meal and watch someone I don’t like get married. Am I insane?