Fiction by Emma Hooper.
The eponymous Etta is an 83-year-old woman who takes it into her head to walk across Canada, despite the fact that she's having a bit of trouble remembering who she is at times. (If you're interested in the rest of the title, Otto is her husband, Russell is her neighbor, and James is a coyote.)
This was an odd little book, but it held my attention. The ending was a little too ambiguous.