My fat wife did something really awful too me?

So, I've asked many questioned regarding her in the past here. I had a talk with her and told her she needs to go on a diet or a divorce and I don't appreciate her eating a 1000 dollars worth of food a month and I'm disgusted by her not bathing and using her bed as a toliet. I told her I had enough and she threw her poop at me and I'm dead serious it was unbelievable I don't know what to do so I'm staying at my moms but what should I do from here?