It's just you and her now. She's not like you, not as tough, and instead of facing reality she withdraws back and away into some stupid fantasy world like ignoring the bad things will just make them disappear. You understand that, you do, but you pretend you don't, and you hate them for leaving you in charge. You hate being there, hate the man who calls himself your father, and the woman who probably doesn't know you exist, who doesn't know anything outside of herself exists, really. All that anger builds and builds until it leads to this moment, because if you don't do something you're going to fucking break, and you won't let that happen, not here. You're not going to be stuck in this hellhole anymore. If they can leave, after all, why can't you?
The house is quiet this late at night. The TV buzzes faintly, casting a pale glow over the form of the woman, but he's practically dead to the world, and your father isn't home. You retrieve your things from beneath the floorboards, and you zip your jacket up to your neck before slinging the worn backpack over your shoulder. You've got enough cash to last for a while, until you can figure something else out, and a pulse starts deep within you as you realize this is it. Freedom. You're not happy, exactly, but this is probably the closest thing to happiness you're going to get for a while, and it'll do. The only problem is her.
You pause in the doorway of her room, your sister, even if there's no shared blood between you, and for a moment, you're torn. Maybe you should take her with you. Maybe it'd be okay if you did. You almost step forward, almost wake her up, but you change your mind at the last minute. She'll be fine, you tell yourself as you back away, out of the room, and let yourself out the back door. She'll be fine. Surely she won't stick around, not after this. Surely she'll leave too, and then you can all live your lives, separate and free, just like you all wanted. They left, after all; obviously they didn't want either of you tagging along. But that's fine, you think, as you made your way down the quiet sidewalk. You're all better off alone anyway.