Okay, no beating around the bush. The Bat Family? Not very good at sleep schedules. Or healthy work-life balance. Or just, like, generally not running themselves into the ground sometimes. There were different reasons - crusades, grudges, personal motivations. Sometimes things were just really bad in the city and it felt necessary. Sometimes 'normal life' got a little boring and it was just an interesting case. Whatever the reason, 'overworking' was basically a family tradition.
Babs knew this as well as anyone. Could be as guilty of this as anyone. Oracle's system never sleeps; there's always another alert to answer. She's had to learn - repeatedly - the necessity of good self-care. She wasn't going to call herself a master of it - who could say how long it would be until the next time it was her eschewing sleep for days because she was glued to her monitors? - but she'd experienced this issue herself, and she could recognize when it was happening in front of her.
Which was why she was a bit... concerned, to find you down in the Batcave, parked in front of the Batcomputer, immersed in your case, a mug of coffee in hand, the pot sitting half-full an arm's length away, and even a couple empty energy drink cans scattered about the desk. ...Yup. Been there.
"Hey. あなた? ...Hey." When you don't immediately respond, Babs maneuvers her chair close enough that she can reach out and lay a hand on your shoulder - if words won't get your attention, up the ante. "How long have you been down here?"