Hmmm... the images are good enough from a technical aspect ('though I'm not really sure I get the monochrome/colour versions side-by-side idea), but I don't see anything that tells me who she is.
Well, The shoes do tell some of her personality........
I would like to see some closer shots (I suspect there are some ,just not posted here ) I also think She will like the Monotone + color side by side . They (High school Seniors) seem to really like anything that sets them apart from their piers . I try to shoot a set for the student ,a set for mom and dad ,a set for the grand parents ,and a set for the boy/girl friend ....BUT not over the top sexy or the parents WILL be offended !
Recently I shot a "RAP" band in HDR . After making the three shots( +/- 2 stops ) I placed the properly exposed frame as a layer over the HDR ,and masked all but the faces of the Band . All that to say ,I have several Senior shoots booked for Aug. After I return from vacation next week <And I am going the add one or two shots in this same manner.............Just trying to send some ideas your way ,The kids seem to like it.