The Policeman: Are you a Satanist? Are you involved in some sort of cult?
Abby: Help me.
The Father: Maybe I want to get caught.
The Father: Please don't see that boy again.
Owen: What are you? Really?
Abby: I just know that this is what happens when you don't invite me in.
The Policeman: What do you mean a little girl? How little?
Chosen answer: The thing that zooms across the water appears to be Abby herself - upon breaking the window, she beheads the boy holding Owen under the water almost immediately after she enters the pool room; her incredible speed makes it possible that she moved rapidly over the water without sinking below it.
Purple_Girl
Its one of the bullies upside down you can see if you pause at the right time or slow it down.