Mary was completely surprised that any of her spells had hit at all, utterly shocked at the cavalcade of wretch deaths. She jumped a bit as the beast almost hit and went for Rin. She panicked as Rin was pinned down by the dog-human creature, unsure what to do. After  hearing Rin's cries for help though, she sprung into action. "I'm coming for you, Rin!!" The busty mage yelled, casting "enlarge person" on Rin. She watched in near awe as Rin became a giant, easily capable of squashing that dog-human thing.