It's entirely possible that you will have to respond to this.  You should probably talk to a lawyer of your own, to represent your interests and you wife's, and one place to look for an attorney is our website, http://attorneypages.comI'm not a Pennsylvania lawyer, and I don't know all the facts of your case.  But it's entirely possible that your father's wife's lawyer is going to try to prove either that your dad is getting an economic benefit, from having your family live there with thim, or that your family is getting a benefit from your father.  Either way, they will argue, it justfies more money for the wife, of course.