"she has no interest in the house."
Says you. Just because you bought the place before you married doesn't mean anything, nor does the fact that it's titled in your name alone.
You have to understand that LA is a community property state, and unless you used pre-marital savings or inheritance to pay for it and didn't use marital income (job) to make payments, then she's got a marital interest in it. She won't get it in the divorce (unless you want to hold onto 100% of other marital assets more important to you and want to cough up the house to keep them).
Even if you did use pre-marital separate property to pay for the entire place 100% before marriage, LA law may give her a marital interest in the increase in value of the place during the marriage, if any.
All this is aside from the fact that you may not lawfully kick her out unilaterally.
"she just wants to stay in the house in the other bedroom and use the bathroom. you have to remember she is a narcisist."
One thing has nothing to do with the other and it's irrelevant anyway.
You need to talk with a family law attorney about filing for divorce/separation and filing for sole possession of the marital home pending outcome of the divorce.