If you don't want to know the circumstances surrounding Saturday's entry in this slideshow, then don't read any further...
[spoiler]Saturday's quote:
Ep #1096 (1970) - David - 'You MUSTN'T be frightened, Hallie. You MUSTN'T be.'
From "#1095/1096: Robservations 09/08/03: Chilling Farewells"
Gerard and Daphne lead the children into the same room David and Hallie saw in their dreams. I know, says David. Everything is exactly the same except for the dolls that were sitting at the table, says Hallie. The dolls aren't here, says David, because we don't need them anymore. What do you mean? she asks--what's going to happen to us?--David, answer me! Daphne steps forward, puts an arm around each of the children and seats them in the chairs at the table. Gerard watches approvingly, standing by the door. What's going to happen to us? asks Hallie fearfully. Daphne stands by Gerard. It's too late, replies David woodenly, it's too late, Hallie. Why is it too late? she demands. Gerard, sneering, goes over to David, grabs his hand and holds it. He locks eyes with the boy, then does the same to Hallie. The children now resemble dolls more than they do living human beings. Gerard and Daphne leave the room. David and Hallie, mesmerized, gaze at each other blankly. David, I'm so frightened, she says. You mustn't be frightened, urges David, you mustn't be.
[/spoiler]
Except for not addressing Hallie by name, the Robservations references the quote perfectly...
And considering this quote and the one from this past June 12th -
1970: Ep #1081 (1970) - Hallie - 'I MUSTN'T be afraid,
I MUSTN'T!' - the show definitely wanted to stress that Hallie shouldn't ever be scared.