I own an Olive Garden Franchise and deal with customers with their noses in the air, who are rude to my employees, and-or expect my employees to grovel at their feet for no reason. I do not condone this at my restaurant, and will stand behind my employees. However, if what you said is true of this "supposed" manager, she would be fired in a heart beat at my establishment.

You should contact the Franchise Owner of that Wendy's, and if you are not satisfied with that response, call Wendy's HQ. I will bet if it bet that far, you will receive an apology from the OWner and that Maria will no longer be employeed.