She had every intention of doing everything in her power to stay by his side, including fighting friends. She already defied the Order, after all - they'd probably already told her brother and the higher ups she 'turned traitor'. Though at least Lenalee managed to get a hold of her brother first. Allen was worth every bit of that 'betrayal', and she could only hope Komui would find a way to get free too. After all without her or Allen there, he had no reason to stay anymore, right..?

She leaned up to Allen with a warm smile, pressing her lips to his forehead, "We have an early morning ahead of us. Get some sleep, Allen~" They could head out early and then catch up on their sleep on the train.

Presuming they do get a power nap on the train, and don't get sidetracked that is.