So was Bullock supposed to be autistic in this?
The whole thing of continuing to call her kids "girl" and "boy" was so over the top it seemed like she suffered from Asperger's. Add in her weird detachment to pregnancy, reclusive antisocial behavior coupled with artistic talent, she appeared to check all the boxes.
Just spitballing on this part but maybe her autism is what gave her an edge in survival in this world sort of like it did for the lunatics but not to the same degree. Someone who read the book should know, but her character was written to be a tad 'off'.