Miss Maudie is one of the most influential people when it comes to Scout. There are several reasons for this.
First, Scout trusted Miss Maudie, and they spend a lot of time together. Here is what Scout says:
Miss Maudie and I would sit silently on her porch, watching the sky go from yellow to pink as the sun went down, watching flights of martins sweep low over the neighborhood and disappear behind the schoolhouse rooftops.
During these times, Miss Maudie and Scout would talk about many things, and Scout, being so curious, would ask her questions. Miss Maudie would give sage advice to her. For example, Scout asked about Boo Radley. Miss Maudie gave her some background information about him.
Second, often Jem and Scout would not understand what Atticus was doing. So, Miss Maudie played the role of explaining things to the children. For example, when Atticus said that it was a sin to kill a mockingbird, Scout and Jem did not know what to make of it. Here is what Miss Maudie says to Scout:
“Your father’s right,” she said. “Mockingbirds don’t do one thing but make music for us to enjoy. They don’t eat up people’s gardens, don’t nest in corncribs, they don’t do one thing but sing their hearts out for us. That’s why it’s a sin to kill a mockingbird.”
In light of these two points, we can say that Miss Maudie always seems to say the right things at the right time. In this way, Miss Maudie is a counselor to Scout.