Suzanne: You're not gonna believe this, but Dex is here.
Maddie: What is this? The night of the ex's? Colin's here, too.
Suzanne: Where?
Maddie: Right there.
Suzanne: You know, I can sort of understand the whole bad boy thing, but what did you ever see in him?
Maddie: Oh, codependency, the whole Mother Teresa complex, believing I could change someone into something else, thinking that great love and great drama were the same thing, insecurity... Oh, and the guy can fuck.
Jason: She stuck a lipstick in her boob and it fell out of her pussy... Okay?
Jason: No costume, no candy motherfucker.
Answer: A sense that it was too easy to just open the door and leave. Evil is a sore loser and will always have a trick up their sleeve to win.
If you pay attention, you can hear bugs and insects that are night creatures making noise.