Professor Aurora Astra

=== Backstory ===
She was born in America, living there until she was about six years old before her parents moved to London. (This explains why she has an American accent). Her dad died in a car accident when she was 17. Two years later, her soon to be father-in-law killed his son in order to keep him from marrying her, because she was muggle born. He was never convicted of murder. The next year her mother committed a dark and gruesome act. 
Aurora worked as an auror for the ministry while getting a muggle education at a local college. Later, she was hired as a professor. She wrote her own textbooks, but unlike Lockhart, she's not cocky about it. 
=== Personality ===
She's very understanding of others. There is no situation where she would judge someone right away. She always gives others a chance to explain themselves before she jumps to accusations. That being said she is not a fool. She knows when and when not to have a civil conversation with somebody. Sometimes there is only so far you can go before you snap. She LOVES muggle books, probably because her dad was an author and she was encouraged to read from a very young age.