My opinion on whether the scene in which Scout saves her father and Tom is that it is realistic(to a certain point). I also believe that Scout’s actions were not out of character. Despite seeming very unrealistic I consider the taming of the mob possible and fitting for the story.
Personally I view this scene as one that brings the reader back to Earth. Before, the book has portrayed Scout almost as an adult. People consider Scout a child in the book, but because the book is set in her perspective it emphasizes how advanced(ability to read) and mature she is for her age. The reason the scene is crucial to the story is because it shows the reader that Scout is still a child, and children act on impulse at times.
From what I understand Scout has the ability to see evil in the world clearly, but because she acted on impulse, she didn’t understand what was going on until she is already within the crowd. Once in the crowd, Scout’s actions were only explained to me as trying to do whatever possible (not including kicking) to save Atticus.