Basically, were all sons of bitches. What Lee did is good for the group but everyone is just the causer of bad events.
Ben- Totally lied to us and was out for a friend that was never real and didn't consult the group.
Lilly- Snapped because of all this shit were going through, and murdered ( in which i think) cold blood
I think the pink x represents that there package is here at the motor inn. Ben hid the package in the hole with OUR survival meds. Lee took the evidence that the traitor was among the group AND how was it there meds, we didn't exactly go to their base so we didnt steal shit. The bandits came to the hole and didnt see it there so they kept our people as hostages. Ben had an agreement with the bandits so it isnt really Lee's fault for what happens after. So yes Ben is the one at fault.