Sabine's 'Doodles'

(For anyone who hasn't finished the book, this has to do with the ending)
Out of all the drawings in Griffin and Sabine, the ones I find the most intriguing are Sabine's more tribal ones, even the doodles in the margins of her letters. The first time I saw them, they reminded me of tribal drawings, especially prehistoric ones, especially those found in aboriginal Australia. Even the tiny swirls and stars that pepper the pages seem to have a prehistoric and mysterious air to them. I especially love the postcard that Sabine sends toward the end of the book, with its chaotic mishmash of dark geometric shapes and bright, tribal figures.
After discovering Sabine's true nature at the end of the book, and some fascinated and somewhat bemused analysis, my assumption is that the illustrator chose to make these figures and sketches prevalent throughout Sabine's work as a reflection of her nature, as part of Griffin himself. Sabine represents, perhaps, the darker and more primal part of Griffin that has been continually repressed, and this is what makes her such a fascinating character for both the reader and for Griffin himself. In subconsciously creating a being that is, as he admits, far more fascinating than himself, Griffin also sets free a desire for a life that is far more interesting and diverse than his own, and also the regret that the opportunity to create one has long since passed him by.