If your end of the relationship never progressed or matured, it could have been very hurtful, but at that time, she was probably more worried about you then hurt over your slight. And you did become more appreciative in later years, no?
Not just with my mother, but with my father as well. My best conversations with Dad were the ones we had in the car (I don’t remember us talking much at home ; )
Furthering that tradition, I also had the best conversations with my own kids in the car. Maybe it’s the confined space and/or the lack of eye contact that makes it easier to “open up” in the car.
If your end of the relationship never progressed or matured, it could have been very hurtful, but at that time, she was probably more worried about you then hurt over your slight. And you did become more appreciative in later years, no?