Suzy Rust is the same now as she was then - a spoiled, wealthy, screwed up person who toys with people till she's tired of them, then cuts them off in the cruelest way she can think of. She gets off on it. Any given relationship has about a 1 - 2 year lifespan with her, if that. I'm sure she just got tired of Weems and chose not to be bothered to see if he could get home ok because she was done with him. Her guilty feelings about it now strike me as lame and, to be honest, pretty fake.
And this is a very poorly written piece - I have trouble believing it won an award.