Hello and thank you for contacting us. This is Dwayne B. and I’m an expert here and looking forward to helping you today.
The first thing to try is to contact the police, explain exactly what is happening, and ask them to contact her, ask her to leave, and "read her the criminal trespass warnings". However, they're probably not going to do that, they're probably going to tell you "it's a civil matter". If that happens then your only choice is to file for an eviction through the courts.
An eviction under your fact works exactly the same as an eviction when a tenant doesn't pay their rent. The same notices, the same pleadings, etc. with the exception of the parts where they ask how much does the person owe and you have to tell them $0.
Once the eviction is finished the court will order them out of the house.
Since this is in a different state you may want to consider hiring a lawyer to file the eviction for you and then suing for their attorney's fees as well as the order for the person to leave the house. The lawyer will send them a notice letter first and explain how much the attorney's fees will be if they have to file suit and get a judgment. Often this makes the person go ahead an leave the property.
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