Clarice looks a bit confused while caresing her necklace, the golden cross surrounded by roses made of ruby stones was a gift of her mother (at least that is what she remembers) to Marcus and her. She was so confused that she missed the opportunity to tease Riley about his room comment.
Her full body is trembling when she learns of what Cypher is telling her, that maybe Marcus is, she had always hopped to see him again, but she hadn't feel him for a long while, not know anything at all, still she doesn't want to believe it, at east not until she sees the necklace in Riley's hands.
"Yes... Marcus." But before she can explain anything else she takes the necklace from Riley, the necklace is the same, even missing one of the rubies, the one she fixed in a ring as to have something of him with her after he disappeared... but as she touches the necklace a bunch of images came unbidden to her mind, as if seen by her own eyes she can see herself on the run, looking at a younger Riley while offering the necklace to Cypher (who looks the same) as if he was giving him the most precious thing in the world to the only man he could thrust... then her mind filled just with emotions, fear, pain, tiredness... then only darkness.
And as if herself had been punched, the shock of the experience, too much for a day considering what she had learned was too much for her mind, so it popped out. And she felt unconscious to the ground, her mind trying to recover and actually process that maybe her bother was really dead.