Understand her anger is good, it means she's conflicted. So when she gets angry, pretend she is a drill sergeant getting in your face.
read up on validating and boundaries, practice your responses to her - visualise the dialouges.
Know that you might end up divorced. My signature line is the Stockdale Paradox (Google it), it helped me detach and think thru the sitch.
Strength and Honor
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.
