Most agencies have agencies that they work with in other states so I'm sure when they speak with you they will be able to tell you who they use in Wisconsin.
As for asking questions. I'm learning from our own situation and from speaking with the counselors who deal with it, they seem to go in asking questions just like it's no big deal. In our situation the counselor asked our pbmom, "you don't know who the pbdad is but do you know what color he was?" I was shocked that she asked that so bluntly. (I wasn't on the phone, she asked this during one of their sessions but she asked it just like that)
When I questioned her on how she could ask that so bluntly she said. Hey, it's not a big deal, we all know that this wasn't the choice she wanted to make (getting pregnant), so we treat it like it's not a mistake and that it is what it is, no embarressement, no ill will, etc. She says if I treat a girl in this situation like she should be embarressed, she will be. So I don't, I treat them like I would treat my daughter or my niece, with kindess, respect and not an ounce of judgment.
Putting it that way made sense to me. I hope I quoted her right and I'm not coming off sounding bad. She really sounded great when she explained why she asked such tough questions so bluntly.