I think it's enough to go home and say that it's your home and you have no desire to leave.
You don't need to tell her to leave. If she says that the two of you cannot be in the same house, it's ok to disagree with her, then just reassert that you plan to live in your home.
Don't make this a case of you coming back being a jerk. Firmness and strength can often easily turn into being an a$$hole. There is no need for that.
Your position is that you will live in your home. Your position is that you do not want a divorce and that you are willing to work on the marital issues - is she?
The tone of some of this is just too harsh and controlling.
You have to find a way to sift through our advice and implement things in a way that stands up for yourself, without coming across as controlling or punishing.
A tough task...
Blessings,
Bill
"Don't tell me the sky is the limit when there are footprints on the moon."