A new chapter, a new mishnah! If a man takes a vow that his wife won't get any benefit from him, they divorce and she gets the ketubah - with some dispute over the time frame. Likewise, if he swears her off eating from produce, they divorce, she gets the ketubah, and there's dispute over the timeframe. Likewise, a case where he swears her off adornment or perfume. Also, various parallel cases (Gittin, Nedarim) that inform what the husband swears off in these cases - including when one writes a get to prevent aginut. And the ability to use a third party to provide the benefits that one might truly need.