Here's my version:
Audrey is a healer who was in Percy's year. She knows people in Percy's department. She intelligent, kind, polite, and hardworking. So her friend in Percy's department introduces her to Percy. They become friends and then they start to fall in love. So, a year later, they get married. In 2003, they have twins named Molly and Lucy, which is her mother's name.
In school, Audrey was a Ravenclaw. She knew Penelope Clearwater, and after they get married, Penelope starts disliking her. She has always had a soft spot for Victoire, because Victoire is a Ravenclaw and wants to become a healer.