Dahlia Potter-Black was the daughter of James and Lily Potter and Sirius Black. The Potters sold her to the Red Room and HYDRA, behind Siriu's back, because they thought she was a squib. The Potters and Dumbledore told Sirius and Remus that she had gone missing. The Red Room changed her name to Katya Petrova. HYDRA also exposed her to the Mind Stone. She gained the names the Red Widow and the Amethyst Witch. What will happen when Katya is forced to face the family who forgot about her after selling her? How will they react when they can see what she can do? What will happen when Sirius and Remus discover what the Potters truly did to their daughter? ~I don't own Harry Potter or Marvel. Just my OC and her plot.~