That is totally BS that you got from the lady at the clinic.
Suboxone was designed to be an outpatient option (from what I have been told by friends who have done it- I am NO expert). I called once when i thought about getting on sub and it was simply a matter of making an appointment, getting an evaluation (they took one over the phone to start), getting the first dose while at the dr, then being sent home with a one month supply for a re-check in 30 days. I think you should try another dr who can perscribe. Don't let this stupid lady de-rail your plans.
I decided not to do suboxone because by the time I could get in to see the sub dr. I was already well over withdrawal and figured I would only do worse by getting myself hooked on another drug. Had I found out about sub earlier, I would have DEFINETLY gone that route. Don't give up. You are on the right track here.
Of course, I have no idea about your specific addiction, but in general it sounds like the clinic just wants to make the big bucks off a two week in house treatment...