These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Jessica may count as well. Many fans thought she was the best character and were NOT pleased when she died.
Idiot Plot: The girls decide to keep Megan's death a secret even though they had nothing to do with it. In fact, only Garrett would've been punished, which would be even better because they were already mad at him for cheating on Megan.
Actually they are probably guilty of involuntary manslaughter or negligent homicide considering they were the indirect cause of Megan's death.
True, they could be charged with involuntary manslaughter or even being an accessory at worst, but it's not very likely that they would be found guilty. Especially if all of them just decided to have their testimony be "Garret stabbed her as we begged him to stop!"
Actually, the plot would've been so much better if they had done that. Then the killer would've been Garret seeking revenge instead of what we got.
Further Idiot Plot: the girls' first reaction is "Let's dump her body in mineshaft!" instead of what most friends' reactions would be, which is CALL AN AMBULANCE!
They tried helping her, but she was impaled through the chest and died in seconds.
All of them couldn't have 'just decided' to pin the blame on Garret - Chugs wasn't going to abandon her brother, Cassidy was too full of scruples to go through with it comfortably and Ellie was a weepy wreck who would have fallen apart the moment the police tried to get a statement out of her. So much for a united testimony.
Too full of scruples to report a murder?
Too full of scruples to absolve herself (and the other girls) of their part in the murder.
Chugs isn't going to abandon her brother even after he murdered one of her best friends...can we throw that in under Idiot Ball?
Why? First of all she obviously knows that the 'murder' was not intentional and secondly it's pretty normal to side with your family when they are being thrown to the wolves (by your other 'friends' no less). Chugs sticking by Garrett is probably the most realistic reaction anyone has to anything in the film.
The Idiot Plot is that there are several chances for this whole serial killer situation to have been avoided. First, they didn't need to fake the girl's death. Second, they could have stopped the prank after the "death" instead of letting it go on and on. Third, Garrett could have not stabbed the "dead" body. Fourth, they could have turned themselves in. Any of these things could have averted the story.
Les Yay: During the toast, Chugs' "Ellie, I love you because you're always there to help with homework. You're like a spellcheck with a nice rack" line, and later, her reaction to Megan being given fake CPR ("That's hot").
Misaimed Fandom: Chugs is pretty popular in the fandom for her unapologetic skankiness and snarkiness.