Mic Hunter is in St. Paul, which I know is quite a drive from DuBuque. I might guess that there would be some help and possibly a group like SIA or SLAA in Madison but I don't know for sure. Our member Land of Shadow was trying to set-up a group in the Twin Cities in the last few months. The Chicago-area is maybe 3 hours from DuBuque too.
How far is your client willing to drive? I would guess that St. Paul is only a 4 & 1/2 hour drive from DuBuque. It is a long drive to Denver but we have several weekly groups here run by the Wings Foundation to attend too.
Dr Lee Blackwell in Huntington Beach, CA offers counseling over the phone too. http://www.drblackwell.net/index2.html