My question involves a child custody case from the State of: WI

My brother's ex girlfriend has recently informed us that she will be taking him to court and that he will never be able to see his son, who will not be born until January. I know that it is unlikely that she will be able to cut him out of the babies life completley considering she will not let him off the hook as far as child support is concerned, but could there be something I am overlooking? He does not do drugs, has a steady job, and does okay financially is there any reason she could take away all of his rights to this child?