In chapters 1-3, what was Calpurnia's fault?

According to Scout, who is the narrator of the story,
Calpurnia has many faults. It is only later in the story that Scout comes to appreciate
Calpurnia, who is the family's cook. In the first chapter of the book, Scout introduces
Calpurnia. She describes the woman as being nearsighted and having to squint all the
time because of it. Scout describes Calpurnia's hands as being "wide as a bed slat and
twice as hard." This shows that Calpurnia is a disciplinarian around the Finch house,
which naturally a child would dislike and consider to be a fault. Scout considers
Calpurnia to be a bossy woman, and she describes their disagreements as "battles." The
older woman usually wins these battles, much to Scout's displeasure. Calpurnia asks
Scout "why [she] couldn’t behave as well as Jem," and she also calls her home when she
does not want to come in. These are all things that Scout hates. In the second chapter,
Scout blames Calpurnia for having her copy chapters from the Bible in neat penmanship.
Scout's teacher, Miss Caroline, disapproves of this type of handwriting. In the third
chapter, Walter Cunningham comes over for lunch and Scout is rude to him. Calpurnia
confronts her about it, which Scout does not like. The woman gives Scout a smack on her
bottom. Scout asks her father to fire Calpurnia, but he refuses. All of these things are
considered faults of Calpurnia according to Scout.