“They are definitely in trouble with each other because they are at such dire straits with each other that they all have differing opinions on what to do and what would be right to do,” Troian explains. “It gets in the way of a lot of really good decision making."
We’re going to go ahead and guess that the decision on “what to do” involves whether or not the girls should tell Caleb (Tyler Blackburn) about “A”’s existence — if they tell him (which Hanna strongly opposes), “A” could hurt all the girls and Caleb much more than he/she already has. But if they don’t, they look incredibly guilty.
Troian’s comment also seems to suggest that “all” the girls are in cahoots — not just Spencer and Emily. Are we going to see Hanna and Aria get into a pillow fight next?