Amy grabs Jenn and they run upstairs. They lock themselves in the far bedroom. They can hear Lizzie being violently murdered downstairs.
Amy: Call 911!
Jenn: Right!
Jenn reaches into her pockets.
Jenn: Fuck! My phone's in my jacket!
Amy pulls out her cell phone and looks at it.
Amy: The battery's dead!
Jenn: Oh, Jesus...