I see this as an object lesson about A) Not assuming things and B) Staying relaxed even when there appears to be a problem. Since I made no accusation I have no apology to make, and there was no offense or problem caused. I knew this was a possibility and it turned out to be the truth. Furthermore I know that the bag was not placed in the drawer after it was asked about because she did not enter that room today except when I was in it.
Nonetheless I am glad that the money isn't missing and very glad that I didn't take any rash action.