|"Forgetting what he was doing, the right tire crunched." I think this means the right tire was forgetting...? The story flows beautifully, shows the manipulative nature of the wife and the strong emotions thoughts of having mom too close have on Andy. The reader wonders why Andy does not want his mother around on a more permanent basis, despite his "allegiance" to her. The reasons are not clear at first, but things are gradually revealed.Realizing these injuries diminished.. should perhaps be...less formally stated?.
It becomes clear later where Jessie's disciplinary methods stem from, and due to good characterisation, where her manipulativeness comes from as well. She seems to feel one is either on her side (as she wants Andy to be) or not. Doing the former will be confirmation of love, doing the latter makes her feel unwanted, therefrom the extreme, unexpected reactions to Andy's responses.
Her plan shocked me; was probably supposed to be prepared for it by aforementioned strong emotional responses; was this an abused wife leaving her husband, or a self-centred narcissist unable to deal with the fact that she is not the centre of anyone's universe?
Not quite. One learns from what one lives; experiencing a different role model helps the main character come to her senses; narcissist or not, she is still a mother. Wonderful story.