Post quotes from Chapter 6: The Blind Bandit here.
When Aang, Katara, and Sokka are trying to find the Blind Bandit and they go to the Beifong family's house and then Toph sends them flying with an earthquake...
Toph: What are you doing here, Twinkle Toes?
Aang: How did you know it was me?
Sokka: Don't answer to Twinkle Toes, it's not manly!
Katara: You're the one whose bag matches his belt.
After Toph beat all those earthbenders when they captured Aang
Toph:Its just this helpless little blind girl u think i am just isent me,i love fighting,i love earthbending ,and i am really good at it.