She saves Lee's life when he is shot and keeps Ellie going when they strike to rescue Lee. She is a leader, and not just when the going is tough. When Ellie or Homer are active, she will let them run the show, but when leadership is needed, she will provide, even in 'normal' situations.
She is also compassionate and caring, sometimes in a big way. But often just little things that make a big difference.
At the beginning of the novel we are introduced to Robyn as a responsible, reliable teenager who wasn’t able to commit to the camp out without the conformation and permission from her strict parents. Ellie finds Robyn’s parents’ trust issues in their daughter quite amusing,
“The funny thing about it was that if parents ever had a daughter they could trust it was the Mather’s and Robyn, but they didn’t seem to have worked it out yet. The biggest problem she was ever likely to give them was being late to church. And that’d probably be because she was helping a boy scout across the road.”
Robyn was fairly quiet and serious. She got effort certificates at school every year, and she was heavily religious. Though underneath the coax of this surface, Robyn was an extremely determined, strong minded person, who could be highly competitive at times.
Throughout the novel we see Robyn progress and slowly, bit by bit; and she cracks the shell of the quiet obedient good girl she used to be, before the invasion. Robyn’s major character traits stay pretty much the same and she is still content to keep her morality throughout the war but we do notice small changes and impacts the war has had on Robyn.
For one, Robyn emerges as a leader. She was able to rise above the others when they were all having emotional breakdowns as their world