Okay so I read this book about a year ago and it was about this "special" woman who road the buses all day everyday and her sister decided to join her for one year and the two sisters end up getting closer over the course of the year.
Thank you!

Amazon.com: Riding the Bus with My Sister: A True Life Journey (9780452284555): Rachel Simon: Books (http://www.amazon.com/Riding-Bus-My-Sister-Journey/dp/0452284554)