"All right. I see the tattoo. I know who you are." You say, pointing your sword at the brunette.
She looks shocked and terrified.
"I'm . . . I'm not a witch . . . she . . . she is . . ."
The blonde looks on with wide, frightened eyes, but the brunette is clearly more frightened. She swallows hard.
You slide the edge of your blade softly from her thigh and up her stomach, tracing a line to her belly button.
"We can do this the easy way or the hard way. Either way-"
"Okay! Okay!" She sweats and falls back against the wall in a panic. "I was locked up here by the other witches for failing at a spell." she sobs, "They said I was too weak to be one of them and they'd use me as a sacrifice . . . I thought . . . I thought . . ."
You slap the side of her face with the flat of your blade, "You thought what?!"
"I thought if I killed you they would take me back . . . and not kill me." she falls into a kind of shock, shaking and biting her lip.
"So, how do I get out of here."
She stutters, then you smack her again and she speaks up, "They . . . those bitches left a key over there, behind that stone." she gestures to an off-color brick in the wall, "They left me chained up and I couldn't get to it."
She seems too scared to be lying. All the same, you can risk her casting and incantation with her voice. You put a gag over her mouth. You notice that as you tie it around she begins to piss herself. This girl is literally terrified out of her wits.

You walk over and find the key. You can now escape the dungeon. What will you do with the terrified witch?
1. Leave her locked up
2. Torture her for more information
3. Take her with you
4. Put her to death
Additionally, what will you do with the other girl?