The strange question and mismatched elements sent Fred's mind off in a totally wrong direction. She had said "Batman," not "Superman," right? Her mind was still a little muddy, and she couldn't exactly be certain what it was she had or hadn't said. Her lips formed the name "Harry," which seemed a familiar name. Harry and...Harry and...She could see a wall, none of the equations on it made sense. She could see a plant; why didn't she have a plant? She'd have to get one eventually. Plants weren't as demanding as people or brains - not unless they were plant monsters-
"Pudding!" Fred's eyes widened. "Harry, he's a wizard. He's in Arkham, which is a very bad place. The Joker, Poison Ivy, Harley Quinn, Two-Face, the Riddler, Penguin - they're in there! Wait, why were we in there? That doesn't make any sense. Batman's enemies go in there - Batman, not Superman. Superman has the glasses - which was always a very stupid disguise if you ask me. Just change your hair and take off your glasses and viola you're another person? No, I never got that. Batman was smart enough to wear a mask, cowl - with very long pointy ears that I don't see how didn't get caught in things." She paused; perhaps the Doctor had a bit of a challenge in the rambling championship with this particular brainy person.
"I could use some clothes and a shower. And toothpaste. And..." Her hand rested on her stomach as if she were taking a moment to communicate with it. "Possible a very small stack of pancakes, light on the syrup. No milk, not yet."