In Kindred, what are some similarites between Dana's realtionship with Rufus and her realtionship with Kevin?

Dana cares about both Kevin and Rufus, even though she grows to fear what
Rufus is becoming.

Kevin is Danas husband, and Rufus is the
boy that keeps dragging her back to the past whenever his life is in danger.  Dana and Kevin
have a closeness that comes from understanding time travel.

We didnt...