fun, in your sitch I think the anger and resentment is as much at herself as it is at you. I think she is angry that she went through with the wedding and getting married when deep down she didn't want to. NOTE, that has NOTHING to do with you. Yes she blames you because it is easier to blame you than to blame herself. But in a moment of clarity she will admit to herself, and in time others, that she should have been stronger and never went through with the wedding.
My cousin was supposed to marry his GF back several years ago. He proposed the summer before, they set a date. I was going to be in the wedding. As the date approached, being only 4-5 weeks away, he still had not told me and the other guys in the wedding where to go get fitted for our tuxs. I started telling my W (then GF), that he wasn't going to go through with the wedding.
When 3 weeks out he started to voice to his parents and other that he didn't want to go through with it, people were irate. His parents were angry. His brother was furious. Obviously everyone on her side was furious. I maintained at the time that he was doing the right thing. Calling it off BEFORE the wedding, not going through with it and getting a D later. And while he took a lot of pressure, scorn and anger, he did the right thing. Your W at some point, with the momentum of everything (ordering the dress, having showers, etc) felt she was past the point of no return. But after the wedding she finally broke. And all of those feelings were focused on you, when really she is the only one to blame. She could have stopped it at any point before the wedding, and was too cowardly to do it. That is all on her.
M(52), W(53),D(17) M-20, T-23 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018