As Agnes surmises and appreciates, Peggy is a very determined person. She leaves her well-off family in Brooklyn, with whom she has a secret grievance, and takes a secretarial position with Agnes. She intends to write fiction, and she lands a second job at a Black-owned newspaper as a journalist.
Peggy knows her own mind, she knows what she wants, and she will pursue it. Meanwhile, she’s kind to people who are kind to her, and she stands as a solid friend to Marian. She’s no Mary Sue, though. This is a real character.
Her curiosity makes her a good journalist. She asks about what interests her, and ends up with an article that appeals to many. She has an energy and an industry, always engaging with the world. And she has an implacable temper. Her father has wronged her and she won’t forgive him.
Peggy is open to life and adventure, yet she has a cool head and won’t act impetuously. She has a steadiness that compliments her joie de vivre. I’m going to say Seven.