I feel so bad for you. What a horrible thing to endure. Talk to your lawyer, she has established residency there in your state. It has already been filed, she can't unfile it. She was served there too. If she tries, go in with the proof of service, and any other evidence that she in fact has residency where you are.
I keep a log of dates she is in your home, anything that shows she's a liar when she tries to undo the state of filing.
Another state has no juristiction at this point, and it wouldn't be hard to prove the other state doesn't. They will not want the burden on their system if it is already filed.
Consider your states privacy laws, if you don't have to have her knowledge to tape yourself in a conversation with her, I'd carry a voice activated tape recorder on your person at all times, in case she actually vocalizes her intent to get you through the other state so she can have the advantage. If it is the wrong venue, she could actually be charged with a crime for frivilous use of court. A VAR would also show no violence on your end in case she tries that line.
Be proactive, but I wouldn't let it bother you too much.
I don't know how you can do it.
I hope she gets EVERYTHING she deserves in life. Take care of yourself.