Feelings of guilt. An unpleasant feeling is not it?
As you look to the player will experience this feeling throughout the second season?
Do you remember episode 2? The moment when Jolene (woman with crossbow) caught Lee by surprise in the forest. When this episode came out, a lot of people (including me), mistake thought that Jolene was mother of Clementine. Especially when Jolene said: "You took away her from me!!!" And when Lee watched record from video camera. But it wasn't so. To be honest I am very upset about this.
Think about it. If Jolene would be mom of Clementine, and player (or Denny) would kill her, then Lee learns that she was mother of Clem, how player would can look to eyes of poor little girl after this? How can he lie to her that all will be well, and they will be able to find parents, after this? And then player will asking himself: "Do you feel like a hero yet? Are you still a good person?" It would be a terrible sense of guilt, and this would make the game even more dramatic.
I really want to feel something like this ^ in season 2.