In "Kindred", how are Kevin and Dana different and similar?

Kevin and
Dana Franklin are husband and wife.  They met at an tempoary employment agency.  Dana is an
African American woman.  She is small and attractive.  She is intelligent and creative, an
author.  She is a typical American woman until she is somehow pulled into the past in the middle
of the pre-civil war south.  She finds herself a slave and realizes she is stronger...