For all of you who put the burger cupcakes in your favs to make later, you know you will owe CustomCakesBySharon, right?
Just wanted to say those are very cute cupcakes.
I agree with a lot that has already been said, but I wanted to add to what someone else already said - just let it go. Otherwise, if retaliation happens then you just lower yourself to her level. You don't seem to be that type of person, so I think you are right in not letting it go further.
And I sure hope that no one writes me when I make a spiderman cake, or a cowboy cake, or a Woody cake, or a Wilton-designed cake....the list could go on and on. I'm just curious if she thought it through before writing to you.
Have a blessed day! And...keep on baking!