She shouldn't feel ashamed, it was just a mistake, but tell her to make sure not to do that again.
After the game people had pictures of the people in their minds, but not in cameras, phones, whatever.
Unless you're a hillbilly I guess.
Some guys taste better than others, and the taste will vary even with the same guy just due to diet and other things.
Then, later you agreed to this and you are glad to have this relationship.