you want to go legal then it is just like any other eviction.

required number of days notice, then file hold-over.

But you can say, look, this is a shared house, there could be any guys in the house, not safe to your kids.

You need your own apartment.

I am not going to give you a hard time. Just move out the end of month. Don' try to fight me. When I want somebody out, she will be out. One day more or one day less, no difference. She will be out.