After quite a long google search, I can't find any one piece recurves that match the distinct shape of the riser that I am looking at from production stills. It may indeed be custom. No bow I have seen matches the shape of the riser just above her hand. I haven't seen a single other recurve that has a perfectly smooth sight window (or I guess it's perfectly smooth because it has no sight window).
So far the most similar results that I've turned up are custom bow makers, but given the simplicity of the design, it really shouldn't be hard to have a bowmaker replicate one for me. Obviously I'll need to come up with a set of working dimensions for the riser and the overall length, but I think if I get in touch with the right person, it should easily be doable.
I am going to keep looking though when I get time. you never know what I may sniff out on the internet.