This is more related to episode 2 than episode 4 but whatever. What was with Jolene anyway, and her videotape at the end? I thought the videotape at the end of episode 2 was a way of setting something up for ep 3 but we never hear anything about it afterwards. The video also doesn't reveal anything about how she got Clementine's hat.
And Jolene herself. Nobody knows who she was besides a mother who lost her daughter according to the picture in the tent. When she died she seemed like a useless character anyway that had nothing to do with the plot, although I wish she was something more.