Harry Potter had a twin sister he didn't know about, Megan Potter. When Voldemorts killing curse rebounded causing him to flee a strange man came into the Potter house and took Megan, leaving her on the doorstep of an orphanage. She grew up being bullied, without any friends and has never heard anything from her dead...
Leila lived with her pack all her life. It was until she was forced into an arranged marriage that she ran away from home. She turned into a rogue and while running away from an Alpha, she ends up kidnapped by another one. The exception for this was one: this Alpha was her mate.