I have to write a letter apologizing to a customer... the customer received a counterfeit $50 bill at one of our stores. She thinks it came from our store but left the store before determination of the fake money. She wants a letter stating that there is nothing we can do about the problem so that she can give it to her attorney. We have a general apology letter that we send but I need a few sentences directed toward her situation. Any help would be GREATLY appreciated. I am terrible at things like this.