a Replacement to Ruin (гет)

Hortensia discovers, years too late, that she received a Hogwarts letter hidden and ignored by her parents for years. Entitled, bratty she blackmails herself into Hogwarts, beginning as an older first-year... placed right into Slytherin house.
Bullied by her housemates, her bleached blonde hair is hacked off in a vicious prank. Snape reluctantly brews the regrowth potion that restores it. Only it doesn't come back blonde, but, lush, vibrant red, the exact shade of Lily Evans, infact everything else about her looks like Lily Evans instead of the washed out child of Petunia Dursley.
What begins as cruel fascination becomes a vicious, all-consuming need to own, to have. To make Petunia’s daughter pay for every slight her mother inflicted. To ruin the girl who looks so much like the one he lost, to use her.
Hortensia finds herself helplessly addicted to the way he wants her. The way he punishes her for sins that aren’t hers. What should horrify her only makes her want more, willingly letting him cross every line of decency because it’s the first time she has ever felt truly wanted.