Here's one of my all-time favorite vore stories, and it definitely features a bitchy pred. It's "High School Huntress" by Observer
As a preview: "…was it okay to do something like that? It was one thing to make a freshman kiss your ass or smell your fart, but to eat them? Diana thought back to Ms. Richard’s talk once again. As a superior and beautiful predator, she should feel no shame in devouring her schoolmates, it was just the nature of the food chain.
"Her body screamed yes, quivering in pleasure at the thought of swallowing up a freshman, but the rational part of her mind nagged reluctantly. It wouldn’t be right to digest someone just for her own pleasure, as much as every fiber of her being yearned for it."
(Spoiler: she decides that yes, it is okay to digest someone)
Link: http://pastebin.com/KJh91GCu