Donna: Haven't you ever done Assertiveness Training? Before I looked into the Doc, I did it all - EST, T.M., Scientology, iridology, Primal Scream... I don't know, I figure another five years of real hard work, and maybe I'll be a real human being.
Charlie Barton: Sorry to scare you, ma'am, thought you was a cowjacker.
Boy watching TV: Wow.
Mother's voice (offscreen): What are you kids watching?
Girl watching TV: The newslady's turned into a werewolf.
Eddie Quist: Don't you know anything?
Chris: Eddie?
Eddie Quist: You know me, but I don't know you. Why is that?
Erle Kenton: We should have stuck with the old ways. Raising cattle for our feed. Where's the life in that?
Charlie Barton: Humans are our cattle.
Erle Kenton: Humans are our prey. We should feed on them, like we've always done. Screw all this "channel your energies" crap.
Karen White: A secret society exists, and is living among all of us. They are neither people nor animals, but something in-between.
Dr. George Waggner: We should never try to deny the beast - the animal within us.
Answer: I think they were purposely brought there to both join the colony. Marsha, who desired Bill, was impatient and bit him. As for not being mad at her, the Colony was slowly turning to her leadership, instead of the Doctor's compassion treatment.
Why would the colony want Bill and Karen to join them?