"I usually am. Once I get to sleep - sometimes, it takes awhile." But once he did fall asleep, it takes a nightmare or a blaring alarm to roust him before he's done. Bart's not worried about her keeping him up by being in the same room. "What does that matter? If you want to leave, I'm not gonna stop you. OK. I'd try to change your mind, but I'm not blockading the door or anything. Wake me up. You know I'd wanna walk you home."

She yells at him that she wants to be safe, but then she suggests sneaking out alone in the middle of the night. Yes. In a perfect world, that'd be totally safe. It's unfortunately not a perfect world, and wanting it to be better isn't enough to change it.