What does Echo do when everyone is asleep? Robo shenanigans?
She either hits the gym (which is nice and empty at 3am!), volunteers for patrol/night watch duties, or chats up whoever’s around. Sometimes she just chills with movies or solitary card games. She also learned to knit from Zavala’s classes, but she sucks at it. But since she refuses to suck at anything, she keeps at it, lol. (It’s also a good distraction from unwelcome thoughts.)
Hell, she’d volunteer for boring ass -paperwork- to avoid sleeping!