I am an American/Brit I had a green card ,before becoming a citizen, am not certain what you mean by conditional, but I am sure you have rights, so as Rock said get information about those rights, you dont have to put up with this behavior, do not get physical , that wont look good, when she is nasty, walk away from her,no retaliation, she may quieten down when she gets no response. if that doesn't work, move out. Work is tough for everyine now especially CA I suggest you get something of your own going, trades people are always in demand , plumbers, electricians, you can go to trade school , even window cleaners... look online if you want work you can find something ...Good Luck
There is only one thing to do leave,get the hell out of there before she hurts you or like you say turns you to violence and then a criminal record she has no control over you or your green card if you aint with her,who does she think she is a permanent ficture within the embassy,she is nothing but a bully maybe brought on through the past but that is not your fault and she should be getting help to sort it not turn on you.
I really don't know much about immigration rules and green cards, but it sounds to me like you married her so you could stay in the US.
You need to go to the immigration office and find out what your rights are, exactly, before you proceed.
Best wishes.