collection agency!!!

[ammo2fm]

My wife recieved a phone cll from a collection agency stating that if she dosent pay up they are going to put a Lein on our home. I live in a state that is Tenenancy by entirety (Wyoming) My wife is a co buyer 2nd name on title can they place a lein on this home? I am not in trouble as far as paying the mortgage never been late and it come in my name only? What can I do or are they just trying to scare her into a refinance or 2nd mortage to pay them off. I dont understand how they can come after me? She is wanting to bK