Someone who defects tends to not get knocked out in battle and dragged onto an escape pod.
At the very very least, disarming her of weapons is a reasonable thing to do.
I'd not say that chaining up hands is wrong either - it just takes a few moments for someone to grab a gun out of a holster and start blasting, after all.
Pointing guns at an unconscious prisoner of war is a bit OTT, though.