“What were you thinking?” Hen wasn’t scolding, exactly, but she certainly wasn’t hiding her disapproval of your actions. She knew you were reckless, but it was awful to be reminded of that fact by you running back into a burning building just when it was about to collapse to save a little boy.
That’s what lead to now; Hen holding an oxygen mask up to your mouth in the back of the ambulance because you had inhaled too much smoke but refused to go to the hospital for some strange reason, and this was the best compromise.
“You could’ve gotten you and the kid killed.” She wasn’t a stranger to risky calls, and she knew that if she was in the same situation she probably would have done the same, but she didn’t want to see you get hurt, and the soot, ash, and cuts on your face proved how close you were.