Michelle Trachtenberg - "Six Feet Under" Appearance - Spoilers

From sonnie : Regarding the Spoiler Riddles—it’s not the Six Feet Under one that’s true, is it ?

Actually, yes. I wasn’t kidding. Keith has sex with Celeste (Michelle Trachtenberg), presumably to keep the hellcat at bay about not lusting after her. Our wittle Dawnie is all growed up—and screwed up—huh ?