Who is Tootsie in Superfudge?

I'm curious to know, can you shed some light on the identity of Tootsie in the beloved children's book Superfudge? I've been puzzling over this character and I'm eager to understand their role within the story. Perhaps you could elaborate on their personality traits, how they interact with the protagonist Superfudge, and any significant impact they have on the plot? I'm eager to learn more about this intriguing character.