I'm not going to give my friend her wedding money back
Why don't you want to return your friend's wedding money?
I'm tired of her and I don't like her anymore and not even a rain jacket could make me like this bitch.
I think you should be the bigger person and give back the money because you know it's for her wedding which is very important to her. Sure, you don't like her but might as well cut all loose ends and return the money so she doesn't nag or bother you anymore and you can finally achieve true closure.
I'll probably let someone else pay for it, take all that money and use it for something better.
Keeping your friend's money will only escalate the tension and the problems between you two. You should return the money to show that you are mature and responsible one.