He knows she doesn't enjoy playing the damsel in the tower, but there's still something giddily pleased about taking the role of rescuer. Even with no visible threat. Until this point he hadn't thought, only moved, and it's now that the adrenaline and a sense of his own achievement catch up, flushing his cheeks.

"Just because they're gone for now doesn't mean they're gone. Better to wait it out with a bag full of hypodermics."

And, conspiratorially, he lets said bag swing off his shoulder onto the chair blocking the door. Obviously he didn't sign those out of the pharmacy.