Nergal didn't know why this woman wanted to bust someone free from the ICU - there were only so many reasons, really - and he didn't particularly care, either. He could help and he doubted anyone else could, or would. All other deities who walked the halls of that place had some sort of ridiculous moral obligation that would prevent them from doing what he was about to do. What did he care? Maybe this Sato woman had some very admirable reason for taking the old man out of the hospital. If he didn't know, he was free from the moral implications of his actions. And he didn't have any issues with curiosity.
He made his way down from the morgue, tossing his lab coat aside and clipping his name-tag to the t-shirt he'd been wearing under it, making his way down stairs and towards the exit at the end of the emergency room. It was about as busy as it ever was and he was thankful for that. It would make causing a diversion that much more effective - and he was fond of the idea of describing the chaos to Set later.
The door swung open, he stepped outside, enjoying the way the cool air felt against his skin. He looked at the clock on his cellphone and glanced over to the woman. "Miss Sato?" he asked, cocking an eyebrow upwards and holding out a hand to greet her.