If it were me, I would make living there so not worth it. I would turn off the utilities, no groceries in the house, I would bring home take out meals for my family and kids only. See how long she will stay.
I saw on news tonight she is counter suing for breach of contract.
They already lock the refrigerator and cabinets so she can’t get food..what I would do is when she gets home and goes into her “Room” I would have the kids just start screaming, make all kinds of noise, have loud parties..this woman is a squatter, probably a liberal loon..in order to get cockroaches like that out you have to use RAID