Response to Cheever's "The Five-Forty-Eight"

The first sentence of this story had me hooked. Because the reader has no idea what the relationship is between the narrator Blake and the woman, the tension between them captures the reader's complete attention. This technique, of putting the reader in a detective-like state, brings in the reader in a way the introduction to another story may not.
Blake's obsession with his ex-love interest's handwriting is extremely psychotic, yet extremely believable. Sometimes, people get stuck on minute characteristics of their lover, and are either driven mad with love or rage by them. Personally, I think someone can tell a lot about another by judging their handwriting, so I found this addition particularly engaging.
The "crazy" handwriting is a good foreshadowing of how crazy Miss Dent really turns out to be. When Blake reaches the Five-Forty-Eight, we assume he's got nothing but clear skies ahead of him. His calmed attitude lulls the reader into a false sense of security. When Miss Dent reappears, the reader (and narrator, as it is) is caught entirely off-guard. And, after all the drama and all the craziness, as it turns out, all she wants is love. Because I consider this to be, when you get down to it, the base of most human actions, I find it very realistic that someone would do something crazy like pull out a gun to try to achieve some sense of connectedness.
The way time weaves in and out of the story set the reader in an unpredictable limbo of the past, present and future. References to the past give us glimpses of the characters' histories, and this coupled with the narrator's interior dialogue allow the reader a very intimate relationship with the story.
Although I found the story more satisfying than "Goodbye, My Brother," I am not satisfied with the ending. I didn't find it believable that all Miss Dent wanted to see was her ex-lover humiliated, and in a powerless situation. Honestly, I was hoping she would end up killing someone else by accident, or herself.