Entirely possible I pushed a wrong button somewhere, but my playthrough branches off from the walkthrough at episode six. A couple of the choices in the walkthrough don't appear (the only choice I saw was the second one), while the game itself seems to proceed as though I had chosen Grace at those points. Then I hit chapter seven and the choices to have extra scenes with Brittany, Haley, and Rachel never appeared. Wondering if there's something going on over on the coding end or if I just oopsed somewhere.
Edit: I answered my own question. Didn't hang out with some combination of the three girls enough.