Chapters 8-9 : How did Scout end up with a blanket across her shoulders? Why did Harper Lee include this moment in the book

        Boo Radley put a blanket on Scout while Ms. Maudie's house was burning down. At this moment we see Jem as a much more mature boy as he tells Atticus all about what happened with the knothole, the pants, everything. Also Jem is smart enough to realize that most of the rumors about Boo are false and that he actually is nice. This was included in the book because Harper Lee wanted to include pieces of evidence that Boo is a kind character little by little.
      "I'm going to tell you something and tell you one time: stop tormenting that man" (Lee p.65) Atticus stated this earlier in the book. Once Jem tells him about what has really gone on he tells them to not tell anyone about it. Atticus cares deeply for his children and Lee wanted us to know that at this part in the book. 
       Lee put this into the book because she wanted us to realize that Jem could understand what is going on, that Scout and Jem might be separating because Scout is much less mature than Jem, that Atticus cares for his children, and lastly that Boo Radley, although all of the harsh rumors state otherwise, is actually a kind and thoughtful character.

P.S. Sorry this is late, my internet was being mean over the last few days.