Characters
What kind of mother can’t stand her own son?
— Robin • Life as a House

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker asks in bewildered hurt what sort of parent finds their own child unbearable. The question carries both accusation and pain, treating a mother's rejection as something that ought to be unnatural. It reads as a plea for an explanation rather than a calm inquiry.
Context reviewed