You are patient

"You won't side with ****? Who will you side with, then?" You ask in a calm voice ignoring her rude swearing. "Do you plan to go outside and wander around alone? Are you capable of surviving alone? What will you do, when you'll find someone nastier than me?"

"You are a monster" She repeats with much less confidence than before.

"If you use standards of the old world then yes, I am. But the only thing that should matter for you is that I am someone who can keep you safe." You keep talking "All I want is a little safe community. Something changed males. We need more sex than before and we aren't ready to bother with stuff like consent. She" You point toward still crying Gwen"is weak and useless for survival. Her only practical use is to give relief to me and your brother. She is a fucktoy. Your brother gives you a chance to be something more. I need a woman to keep this place clean and cook food for our community. You are safe as long as you are loyal"

"I can't stay there and watch how you and Adam **** innocent girls" Just as Lea before Sara is leaning toward agreeing to your cold and cruel logic

"You are free to go, then. You'll leave the only person that cares about you behind. Adam loves you. He loves you so much that he holds his urges to fuck you hard. He loves you so much that he risked confronting me to save you from my dick. He may do things that you dislike but is it right to abandon him?" You try the different direction and it seems to work.

"I need to think about it" She asks for more time but it sounds more like agreement.

"You have all time you need. You can leave any moment you want. But if you stay there you do something useful. I want you and Adam to clean the place, wash the **** and prepare some kind of meal for all of us. Me and Lea will do a supply run"

"Sir. I don't think it is a good idea to trust this slut" Adam says.

"I didn't ask your opinion" You say sternly. "I gave my orders. Lea, follow me"

You lead the ninja girl outside. Adam is right you can't trust her completely but it is exactly why you take her with you. Leaving her with girls would be far more dangerous.