Toph crawled back to camp in the middle of the night and only you are were awake. She had burned her feet when she went to see Zuko, a fire bender and accidentally surprised him.

Once you asked what happened very worried she said.

“It’s nothing… I just got…hurt.. that’s all.”

She winced a tad bit at the pain. Her feet clearly hurt. The bottom of her feet were all red from the burns.