How does the relationship between Jem and Scout change in the first seven chapters of "To Kill A Mockingbird?"

The relationship between Jem and Scout starts out in the beginning of the book as a typical sibling relationship, the typical brother/sister "I love you and I hate you" at the same time.  Scout is a tomboyish sort, following Jem in their playful exploits at home as they play in and around their house in Maycomb.  With the introduction of school, Scout enters first grade and experiences the first change in their relationship where Jem tells her to "Leave him alone," not talk to him or play with him at school.  With the introduction of Dill, a neighbor boy who visits from Mississippi in the summer, their relationship grows more strained, as Jem tells her on more than one occasion "You are starting to sound like a girl," which was insulting to Scout.  At one point, Scout was spending more time with Miss Maudie, an older neighbor lady, than she was with Jem and Dill.  While still together, it would be fair to say both Jem and Scout were experiencing some "growing pains" within the first seven chapters of "To Kill A Mockingbird."