IMO Your daughter would be better off producing the final loads either from a jacket pocket or roomy pockets in a pair of trousers, or even a long dress. The gibeciere (a/k/a buskers bag, drop bag, poachers pouch) is something street musicians, especially old time street magicians typically wear/wore) and, again just my opinion, looks unnatural and suspicious, especially for a girl and provides an external explanation from where the big balls came from. When you have no external apparatus and the balls (or in my case, lemons) are produced smoothly, and with the right timing and misdirection, from the pockets, there is a much higher, "Holy Cow! where the H did those come from?!?!"