What is a theme in “riding the bus with my sister” ??

'Riding the Bus with My Sister' depicts the theme of struggles of mentally disabled people, and at the same time it shows how such people can teach us some most important lesson of life.

Explanation:

'Riding the Bus with My Sister' is a memoir written by Rachel Simon about her mentally disabled sister, Beth. The story revolves around the relationship between the two sisters and how their lifestyle revolved around riding buses in their home city. The story puts forward the theme of struggles and pleasures of siblings with disabilities.

Apart from this, the story also presents to us that how even disabled people can teach us a lot about love, life, and happiness. From her sister, Simon learned that sometimes it's necessary for us to slow down for a while and enjoy the ride.