Brett…great photos…and glad to see another father introducing this wonderful sport to their daughter. We have a two year old that is already quite interested in “feeshing”.
Suggestions for a small grip fly rod…how about a Japanese Fenwick fiberglass rod?
http://www.itinerantangler.com/cgi-bin/yabb2/YaBB.pl?num=1183386545
These rods are quite popular on the Fiberglass Flyrodders website…and the price is right as well.
PM me if you have any questions.
Postscript…the other thought would be a custom build on a blank that you like and ask the builder to do a smaller grip on it.