♥!The Young Adult Book Club!♥ discussion

I'm looking for the title of a book for a friend of a friend, here's what I know:

It's a YA book that takes place in a small town (of course) and is told from the point of view of a young pretty girl who lives with her father who is incredibly strict since her mom died. She's popular and sweet and everyone seems to like her. There is a girl who is fat, ugly, unpopular etc that the popular girl befriends but I think she becomes jealous of the popular girl or something because we find out in the end she's been slowly poisoning the popular girl with cyanide and then there's this bake sale at the end where the unpopular girl poisons a bunch of cupcakes and several people have to go to the hospital. The popular girl ends up dying from being poisoned but they blame it on this boy the popular girl liked but the dad refused to let them date. The unpopular girl goes on trial but some how gets the boy blamed for it. He kills himself at the popular girls grave and the unpopular girl walks away free. I swear it's a good book.

Something to do with truth and lies and hidden things. Like maybe "The Truth We Cannot See" or "These Things Hidden". Not that great but just thought I'd give my opinion and throw a suggestion in there. Hope everything with the book goes well!

Just realised that "These Things Hidden" is already a book title!
Oh and just thought of another one "Lies We Left Behind"

No, it's not a book I'm writing, it's a book that exists whose title I'm looking for.

Oh haha sorry! There's this group called "What's the name of that book???". You should go there as well

Oh, thanks!