Describe Jem and Scout's relationship through these chapters as Jem matures. Why did Dill run away from home back to Maycomb?

As Jem enters puberty, he becomes more distant and
short-tempered with Scout. When he tells his sister to "start bein' a girl and acting
right!", Scout bursts into tears and seeks solace with Calpurnia. Scout also misses
Dill, who has not arrived yet for his regular summer stay. Jem and Scout are able to
agree on their dislike for Aunt Alexandra, who unites them when she comes to stay with
them at the end of Chapter 12. But the two get into a fistfight in Chapter 14, and
Atticus has to step in. Things get better later that night when Dill makes his
appearance--from underneath Scout's bed. Dill has run away from home, and he claims it
is because of his "new father," who has chained him and left him to die in their
Meridian basement. Since Dill has exaggerated so often about his father, it's hard to
get a straight story about what happened. We do know that he feels unloved by his
parents, who

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"ain't mean. They buy me everything I want...
They kiss you and hug you good night and good mornin' and goodbye and tell you they love
you--"

But Dill's parents
never spend any time with him, so he decides to head to Maycomb where he feels love and
companionship from Jem and Scout.