Well, that's kind of terrible. What's even the point of such a story? Less than a story about drinking, this almost seems to be more about being in a terrible situation that would drive one to drink...
And the only thing I can take away from it is a moral-by-bad-example, victim-blaming the protagonist—that you should really just get out if you're in a relationship like this.
My best guess is it was supposed to be a sheer wow-zer in terms of how terrible her situation is, but it doesn't really pack enough punch for that since expectations are set low from the start. If it went longer it could pass for some sort of rumination on the cravenness and despair of humanity, or perhaps about how one's best intentions are routed by common human foibles—but this is too short and jumpy for that.
In the end, I'm left just sort of vaguely mad at the characters and the author.