Hm. K. Well A) don’t make a scene at this upcoming party bc you don’t want all those women to think you’re a crazy/possibly abusive/angry husband - don’t make her look like a victim in other words. And B) you need to sit her down and have a conversation about it outlining WHY you don’t like it -being 100% honest & C) compromise with her/create a plan on exact dates when she should be able to hold her parties with no exception for planning anything outside those agreed upon dates. D) be inclusive in creating some kind of plan for if she does break your agreement. Maybe she’ll have to give up another night she was planning? You guys will have to work it out.