Does the narrator's point of view change momentarily anywhere in the text?
I don't see the narrator's point of view changing. It is a third person narration that aligns reality with how Connie sees reality and this is consistent towards how the story develops. Arnold is seen through her own perception, her parents are initially seen through her own perception, and even the ending when Connie misses her mother is seen through her own eyes. In this, there is little in way of divergence from what is originally shown at the start of the narration. Oates makes sure that the story is told from Connie's point of view, one that allows her own voice to be present despite being silenced by Arnold and the forces that seek to invalidate the experience of young women in modern America. I think that the third person narration stick to Connie's understanding throughout the story, most poignantly evident at the end when Connie ends up sacrificing her own life for that of her family. In this, she does not recognize landscape in front of her, indicating that there is something new in terms of her own state of being in the world. This narration is consistent throughout the story and really does not change.