Confident no

"No" She says firmly after a few seconds of thinking. "Neither I will be your fucktoy. I prefer to get a bullet" She makes few steps toward her machete lying on the floor

"Stop right there!" You say and point the gun at her

She pauses and turns back to you. "Are you sure that you can kill a human? You never did, right? " Ashley smiles "I see you didn't. Your hand is trembling. I am leaving with my stuff and if you want to become a murderer go ahead. I will not play your slaves and masters game"

She starts to put her jacket on giving you some time to make a decision. Ashley is almost right. You did kill, but that maniac was hardly a human being. Now the situation is very different. Yet letting her go away while knowing about such great location is dangerous. She may tell it anyone or come back with friends.

She bends over to get her machete and it is a now or never moment. Either you let her go away or do something.