I've got the same issue. This is blocking the Amy Spanking Connaisseur quest.
I'm going to try giving her a (pointless) private punishment and try spying again, even though I've seen that scene. Amy's priority level seems to be the lowest when stacking triggers, and I may have had another one that evening.
In general, I think things probably work better if you max out everything that can can be done in chapter one before advancing. I may test that in easy mode as well.