Fight-or-flight implies a choice. His is flight, hers is fight. He steps back, but Emma isn't going to try to outrun a bow and arrows. Three against two says they're outnumbered and overpowered. They could run, but they wouldn't get far. If anything they do is a risk, there's a little more clarity here than they'd like.

They're screwed. It's a thought that strikes her pretty soundly at this moment, posture still and rigid. The templars aren't talking to them, hell, they're almost staring through them, and if anyone wants to run in that moment, it's Emma.

But she holds firm in her determination not to show it - whatever that counts for now. "We were just passing through."