That female gnome rogue

You spot a gnome near you. She looks young and fit, wearing a light suit of leather armour and brandishing two rather large knives. Her brown hair is tied in a simple knot at her neck. Considering your size difference, she´ll be easy pickings.

You move in close and then release your spells. She's surrounded by shadows and tries to call for help. You pull her away and, at first, she doesn't resist, probably thinking its one of her "friends" pulling her to safety. However, that changes when you wrench her knives away and she realises she's going away from the group. She starts to thrash around and scream but to her dismay, no sounds come out.

You place your hand on her forehead and cast a simple sleep spell. She quickly falls asleep and you can now easily tie her up with more spells. You dash away, hearing the group of "heroes" call out for their friend who they now realise is missing.

You try to think of where to interrogate your prisoner. You could do it here, but then the other heroes might find you. You could fly away, but she might wake up and you´d risk dropping her. Then again, after some mind searching you remember how to cast a short distance portal. You could use this a few times and just show her to your Master, his mere presence should make her talk.