She is the Earthland version of Hughes (Edolas).
Mary Hughes is created by Hiro Mashima who has no information regarding any inspiration used to create her. She is an anime exclusive character who appears in Fairy Tail episode 129. Her seiyuu is Shiori Izawa.
Like Hughes, her eyebrows have an arrow end pointing outward, and her hair color is the same. Though, Mary's hair is longer. She wears a green outfit over a white shirt that has a red ribbon. She has big, brown boots that come up to her kneecaps.
Her powers allow her to manipulate her enemy's magical attacks and sends it right back at them using a dead looking hand that has several golden rings.