If she leaves or asks me to leave how do I handle if I want to try and save the marriage?
DO NOT LEAVE - Let her leave, you can not stop her.
I would expect her to spew hatred at first however that may end after a few days or a week or so.
State your boundary and then go silent.
STOP talking and see where it all goes. I might suggest that for the moment you do nothing until you have read DB and all the homework and are more confidant with yourself.