"What in the heck?" She nears the curtain as she hears the bed squeak.  She looks to the other three in the room and motions for them to stay back for the moment.  Why? She has no idea, maybe it's just Stephanie masturbating or something.  Though, why are there only squeaks of the bed and no moaning to go along with it?  Sandy pauses as she moves to grip the curtain, and then aims to rip it back to expose whomever might be there.  Of course, her worst fear is that Stephanie is either dead or unconscious and this isn't a happy-sex time for her but is instead a horrific rape...