If it were the other way around, with
me being left outside, I'd be beside myself.
As I understood the sequence of events, the staff first separated the speaker from his wife. Then they told him that they could not accommodate her in the speakers' lounge, and that she'd have to wait outside the facility.
So from her perspective, there were some complications to be ironed out, and we'll get it taken care of. And then, suddenly, the door is slamming behind her as she's standing on the street, with no idea of what's happening to her spouse the speaker. Should she stand here and wait for him to come get her? How will we meet up after the event, if he doesn't come out?
The speaker, properly empathizing with his spouse over the way she must feel, chooses his commitment to her.
It's not a question of whether the person kicked out is likely to be murdered. It's a question of being made to feel powerless, with no clear course of action. Those are feelings that any human is likely to have, regardless of their gender.