Do the homework again and put it on a high shelf out of her reach. You'll just need to be more careful in future.
Moan at your parents to tell her off. She's two - surely she's old enough to understand?
Scribble all over her beloved baby books in felt tip. See how she likes it.
Congratulate them, but don't exactly hold back the disappointment.
"Accidently" trip them up so that you can take their place while they're injured. Besides, you're better for the team.
Congratulate them wholeheartedly. They won fair and square.
"Anyone who upsets me. Why should I bother with them if they upset me?"
"Nobody! I hate being on bad terms with people."
"Maybe a select few who really bother me. But I get along OK with most people."
Forgive them. They obviously didn't really mean what they said.
Don't talk to them until they're practically begging for forgiveness. If they didn't want to upset me then they shouldn't have said what they did, end of story.
Be wary. Now that they've upset you once there's no saying they won't do it again, even if they are close to you.
Are more alert about what they're saying, in case they hurt you again.
Since when did I next talk to them? That was the end of our webcam chats. I don't want to talk to them any more.
Talk as if nothing happened. Everyone makes mistakes.