The computer won't allow it

I had to leave. It was the only way out, the only way to escape this madness and make sure I never fell under Eve's youthful charms. As time went on, I knew I would give in if I stayed here. So I had to leave.

I said nothing more to her and tried not to listen to what she was saying, if indeed she was saying anything at all. I'd never see my darling, beloved, insane sister again, I hoped. I packed the things I thought would allow me to survive in the wilderness and went to the airlock.

"Computer, open airlock." I ordered, and held my breath. The computer AI was smart enough to calculate things through, and even to me it was obvious that my leaving the ship would mean failure of the colonization mission. I therefore expected the AI to fight it.

"Opening airlock." To my surprise, the door opened with a slight hiss.

"Colonist Amanda, you must reconsider," the computer's voice beseeched me. "This would be detrimental to the mission."

I said nothing.

"Closing Airlock." The door behind me closed and I was now in the lock itself, a small room with a closed door at either end.

"Computer, open the outside lock." I stared at the other door expectantly, but nothing happened.

No, something did happen. I heard pump engines working and little by little the air became thinner and thinner, as if I was climbing a high mountain. Soon, I could barely breathe. I sat down, then lied on the floor, gasping with all my lungs. It was all in vain, and soon I blacked out.

I regained consciousness later, not knowing how much time has passed. I was in the small colony hospital, on a bed. My hands and feet were tied firmly in place by restraining belts, which were designed to stop the recovering patients from moving after an operation. I was also fully naked.

The door soon hissed open and Eve came in, still wearing that sexy outfit. I frowned.

"Couldn't have me, so you tried to kill me, sister, dearest?"

She puffed her lips, genuinely hurt.

"Nobody was trying to kill you, darling, and it wasn't my idea. I thought you'd just go and come back a few days later, but the AI said it couldn't take chances. As soon as you blacked out it pumped the air back and I brought you here."

I couldn't care less at this point. Everything was really, really messed up.

"Whatever. Let me up and give me my clothes." I demanded.

Eve in her hot lengerie smiled like a cat.

"Oh, my dear sister, I don't think it's such a good idea. You're a danger to yourself, going off into the wild like that." She leaned over me, the cups of her corset, holding her tits touching my bare ones. "I will keep you right here." She kissed my lips quickly and smiled, then her small, loving hand found my clit and began to slowly caress it as I became wet in a natural reaction.

"I hoped it would be different, Amanda. That you'd love me and take me, that you'd be my wife... But if you are making me do it this way, I will... I love you."

She smiled lovingly at me again, taking her hand off my mound and slowly slid off the skimpy panties off her sexy legs, revealing her pretty pussy to my gaze. It was pretty obvious what she was going to do. I had to do something. Anything! Yet the only thing I could do in my position was talk. So I did, giving it my best shot.