Finn wasn't given any information about what was happening the entire time Carmen was in the emergency room despite filling out the paperwork with all of her fake information perfectly and he was about one step away from straight up killing the woman behind the desk. It would be so easy but would ruin his alias and he couldn't do that. Not when the woman he loved was so happy with the life they were trying to build together.
Still. It was incredibly tempting. Snapping her neck would be as easy as snapping his fingers.
She didn't even seem sympathetic to his plight. She kept spouting the same nonsense about not being able to give out information without the patient's permission. If Carmen was out here, she would be able to give her permission but she might be unconscious for all he knew!