Vianna's forehead creased just very slightly as Ferris pulled away and told her he still wanted her to see him. "Professor!" she exclaimed. "You-- you're being so tempting right now, I'm trying to do the right thing!" she said, though she couldn't hide the amusement in her eyes, and eventually the largest of smiles came to greet her face. "Okay, let me see you... but not too long!" she said, though she knew the second Ferris turned visible she would have a very difficult time letting him turn invisible again.