A choose-your-own adventure. Some fairies have gone rogue. They kill people. Jade is supposed to kill Green before she can do more harm to the fairy reputation. But Jade is reluctant. She and Green were lovers, once.
The narrator offers Jade alternatives.
That night she crawls under the blankets with you while you sleep. Your body remembers how to wrap itself around hers, reviving comfortable positions that you learned a long time ago. You are almost halfway through lovemaking before you wake up completely, and realize these are the same hands that took a man's life. Whatever she looks like, this is not the Green you fell in love with when you were sixteen. She's grown into something ugly and demented, and no amount of logic on her part can excuse what she does.
If you want Green to die, go to section 5.
If you don't want Green to die, go to section 6.
This is definitely one time when a second-person narrator makes perfect sense, when it contributes a closing to the story that no other technique could have done.
She calls this issue of Helix "a superior one" and gives RECOMMENDEDs to three of the seven stories. Sadly, mine wasn't one of them, but I still think the review was rather positive.