The above was very helpful. Just lifting up the pot to show the scent button underneath seemed to create the aha moment.
One thing I have been doing, which I’m not sure is correct, is that after she identifies the correct pot, I click and reward her, then I let her do it a few times (rewarding each one) before moving on. This repetition is similar to the when I use the scent button in the hand. It seems to reinforce the correct behavior, but I wanted to make sure it’s not creating problems.