Hey everyone! You guys are very good guessers. So here is the answer to the mysterious reason Katara was upset.

Katara thought back to why she left in the first place. It just made her more upset. She didn't want to answer.

Everyone, especially Aang was worried. Sokka, who was worried about his younger sister thought about why she would be sad and upset. He then remembered why.

"No reason, I just wanted to get away. That's all." Katara said quickly, "I'm going to lay down now; I'm feeling lightheaded." Although it was true she was a little lightheaded, Katara was mostly lying. She knew everyone was worried and she was already sad enough.

As Katara went to lie down Sokka pulled Aang to the side. "Aang, I know why Katara is upset."

"Really?" Aang replied, "Why?"

"Today is the anniversary of our mother's death." Sokka said sadly but calmly.

"Oh, so that's why." Aang said glancing sadly at Katara.

"Well we can talk to her tomorrow." Sokka said.

They agreed and then they went and told Toph. Tomorrow they would comfort her.

Yes this was short but the next chapter will be up soon. 

Talk 2 U L8R!