Business sense like this is probably hard to teach: Ms. Travis owns the McDonald's here in Hyde Park/Kenwood (52nd and Lake Park, for locals), where last week a member of my family purchased a Big Mac, consumed it, and then became violently ill for hours afterwards (obviously food poisoning). We complained to McDonald's. Ms. Travis, in response, offered to give us a free Big Mac. Seriously.
We'll see her in court, though if her legal sense is as good as her business sense, this will not be a protracted litigation.