The way that the two of them flung insults at each other, it's a wonder that Sophie didn't think they fought all the time. Maybe she understood that was how they were, how they expressed their affection for each other. "You're so lucky she's here. I had a great comeback. Censoring makes our conversations very boring."
Sophie giggled at the reference from the Wizard of Oz, "Tigers growl like this, rawr!" she said, making claws with her hands. "Raaaawr!" she growled again and scratched at Tony's hair, mussing it up.