General   (General discussion, talk about anything.)

I don't think it is the financial loss which is annoying, it is more about the audacity of the woman. So, I am quite sure that TTS was fuming at being, what can only be called, "conned"
I have been in a similar situation, where a person offered me a pound for the trolley I was returning. When I have used a token, I have always told the person that there is a token in the trolley and not a one pound coin.
By the way, I have received a few tokens as promotional gifts. So, possibly, the woman regularly receives tokens as promotional gifts or she works somewhere were she can "pocket" them.