That's brilliant! I love working with voice with hammies, but some hamsters don't seem to respond so well.
My Todd and Finley are doing pretty well. I now have Todd coming back to the sound of his name when I let him out to run around my room, and he comes and hops back in my hand, but I try to keep it to the same tone and volume to make it easier. Finley knows when I have a treat by my gently calling "Fin-Fin".
They both respond to the same clicking noise you use.
I think you've made great progress, her response seems to be almost immediate. I love hammie training, it seems to strengthen the bond with them don't you think?