We are working in fiction texts now for reading.  We are talking a lot about characters, setting, problem and solution, and main events.  If your child is reading chapter books with complex characters, it is great practice to analyze those characters with them.  One great thing to talk with them about is how characters change over the course of a book.  Complex chapter books usually have characters that learn and grow from the experiences that they have in the book.  Pointing out the lessons and growth of the characters is wonderful practice for advanced readers.  It is also great to talk about what steps a character takes to solve his/her problem.