Maria was againts Heitmann when he wanted to expell her students. She became worry about Yusei dueling Heitmann knowing how strong his Deck is, but Akiza assured here Yusei could win
In episode 77, she introduces Luciano as a new transfer student. Luciano disguises himself as Maria, to trick Leo into waiting for 'her' after school. When the Real Maria saw Leo waiting an the class room she asked him what he was still doing at school and really should go home.
