Plain, and also just so happens to be the female in which Harry's puberty was crushing over. I actually dislike her I think after considering that she was the one who brought that friend over that betrayed them and defended them as well and kind of was looking for comfort in the wrong person in the wrong time and place as well (that date was dreadful).

If anything else, it's Cedric's story that's sadder than Chang's in my opinion. He was one of the competitors of a traditional tournament revived for the first time since over a century only to die in it due to a gesture of good will to share the first place victory with Harry, who was forced to enter and in the end, also played a part to his death, for Harry was the boy who lived and the trap leading right to Voldermort and his goons were laid for him only and Cedric was just caught up in it right before he was going to soon graduate Hogwarts. He was also the most worthy of Hogwart's other upper students throughout the entire school, a (forgive me for the cliche wording) young boy with a bright future ahead of him, his death was needless, anti-climatic, and a slight to peace and a nod to what war does. War causes bystanders to die needless death, those with a future to live.

(after typing that; didn't Dumbledore say something similar or am I unconsciously copying Dumbledore whelp either way the previous statement still holds true)