History
In this reality, Anya didn't die in a fire like her mainstream counterpart. She was saved by her father and grew up with her family, but she was a human, unlike her younger siblings - Wanda and Pietro, who were mutants, like their father.
Anya was an unwelcome child, and for that, she hated her father and siblings. Years later, she killed Wanda and arranged this as if Wanda was killed by their father. For what he "did" Pietro killed Magneto, and only then revealed the truth about his older sister, but it was too late, and he was also killed by Anya.[1]