How does Kathy protect Ruth throughout the story?Why does she protect her?

Ruth is much younger and although manipulative, Kathy finds a connection with her. Ruth keeps Tommy and Kathy separated but later feels badly about it. Several years later, rumors begin to circulate that Hailsham has closed. One day, Kathy encounters an old friend from Hailsham who informs her that Ruth has begun her donations and is doing poorly. Despite their tumultuous relationship when they were young, Kathy volunteers to become Ruth’s carer.Check out this GradeSaver link,