You have to realize too, many many of the interviews that are conducted in facilities are done to fulfill a quota. The manager (or other nurses) must perform at least X amt. of interviews before making a decision. Often, the person they want to hire is waiting in the background while they formally satisfy this quota. In short, they are just going through the motions, the decision was made days ago. Nothing you say or any answer you give overcomes this situation.
I once interviewed for an ICU position. They did the interviews just as you are describing, I interviewed with nurses from the unit first. The nurses I interviewed with were very young, could not have been more than a couple years removed from graduation. The first question fired at me was why I picked the ICU to interview for as opposed to going into M/S where I had experience. I described in detail how I used multiple resources to find out what the work environment was like for a number of specialties I was considering (Tele, OR, ICU and ED). I even spelled out the pros/cons of them and explained why I felt ICU was the best fit. One point I made was that I had been informed by more than a few resources that the ICU tends to have a lot of type A personalities, people who are going to tell you when you are doing something wrong.
I was not hired for the position. The HR person's explanation was: "The nurses are afraid that the critical nature of the nurses on the unit may not be what you are looking for." Eh?
This despite the fact that I already knew about it, applied anyway and come from a background that includes military style schooling.
I found out they had hired a group of students into that position instead, a group that had graduated MONTHS before my interview. So, I can only conclude the position was already filled when I interviewed. What? You gonna tell me you thought those GNs were better prepared to absorb direct criticism?
They offered me a position on the M/S unit, surprise surprise.