What words describe Fiona how is she related to Jonas in the book kill a mockingbird book?

Fiona is not a character in "To Kill a Mockingbird". The book does not mention a character named Fiona.

It seems you might be mixing up the characters or the book.

Could you clarify your question?

For example:

* Are you thinking of another character from "To Kill a Mockingbird"?

* Are you thinking of a different book?

Once I have a clearer picture of what you're asking, I can help you understand the relationships between the characters.