Aside from Miss Loose Cannon, I think this was a communication error. Yeah it would have made more sense to go either up North on the left tunnel or go East.
Imagine we could have 2 cats with lamps and a wasp with Light in the air. 3 scouts / distractions. Instead Cat and Ashley will run into another ambush. I guess this is how the game is, huh? I assume Ashley really wants to turn into a cyborg after all.