The Stories of Survivors: Cho Chang
"Well, obviously, she's feeling very sad, because of Cedric dying. Then I expect she's feeling confused because she liked Cedric and now she likes Harry, and she can't work out who she likes best. Then she'll be feeling guilty, thinking it's an insult to Cedric's memory to be kissing Harry at all, and she'll be worrying about what everyone else might say about her if she starts going out with Harry. And she probably can't work out what her feelings toward Harry are anyway, because he was the one who was with Cedric when Cedric died, so that's all very mixed up and painful. Oh, and she's afraid she's going to be thrown off the Ravenclaw Quidditch team because she's been flying so badly." -Hermione Granger, Order of the Phoenix
First off, this story was written by me, Irene Scamander, and my sister, Isadora Scamander.
We think that Cho Chang is very unappreciated, and people do not respect her feelings of what was going on in her life. Her boyfriend had just died, and she was not sure about her feelings for Harry. We agree that kissing Harry was not the right move, but her head was not in a particularly good mindset. If you think about it, they always show her giggling with her friends, but people really do not realize what was happening with her. In our eyes, she was just trying to cover everything up with a smile, but she was really in a bad place.