At the risk of being branded a heretic, I'll ask "why not a C220F?" I have an RB67 which is a nice camera if I know exactly what I'm going to shoot and can determine my entire kit in advance. For a street photo project, which is likely to involve carrying my gear for long periods, I'm getting together a C220F kit. Carrying the RB for hours in my pack especially with some recently surfaced back problems is unlikely. I've played with the C220F a bit, and I like the pictures I got with the 80/2.8S, but my first body had a film transport issue. It's not the lightest, but it's not an SLR which is useful for handholding, and the weight is similar to the lightest MF SLRs. Also, the lack of collector interest keeps the price of a kit with the normal lens reasonable; I had originally considered a Rollei 2.8(C,D,E,or F), but there were way too many sharks in those waters. If your daughter likes MF, maybe you can get her an SLR down the road. I think the ability to carry the camera and shoot handheld is a significant consideration, but that probably reflects my interests which are in the main documentary.
While I'm blathering, let me agree with the previous suggestion to go with KEH. My first C220F had a problem with the wind-on, but Art Zebrak from KEH gave me no hassle at all when I described the trouble in seeking an exchange. But now I wait for the replacement to go through the Christmas rush.
Last of all, good luck with your search!