Adelaide | Forgotten Malfoy.

Adelaide Laurent, born in 1952, is the older sister of Lucius Malfoy, raised in a dark magical family. Initially unaware of her family's sinister connections, she becomes friends with Elara Astrid Vans, a bookish half-blood witch, after being sorted into Slytherin at Hogwarts. As Voldemort's rise to power causes tension, Adelaide discovers that her brother may be involved with the Death Eaters, and she learns about the existence of the Order of the Phoenix. Her growing suspicions lead her into a dangerous web of betrayal, as her friend Elara is forced to turn on her to protect her own family. Eventually, Adelaide is framed for betraying the Longbottoms, and tragedy strikes when her tomb is cursed by Lucius, marking the start of a tragic family legacy.

In the present day, Lucian Druella Malfoy, Sister of Scorpius Hyperion Malfoy, a second-year student, begins experiencing strange visions linked to Adelaide's tomb. With the help of her rival, Rose Weasley and some extra characters, Lucian begins to investigate her past, eventually discovering a hidden book that reveals the truth about Adelaide's death and her family's betrayal. As Lucian uncovers Adelaide's tragic story, she slowly starts to remember her past life and realizes her true identity.

But, no. Do you think it's just all reincarnation and stuff? Yes it is, but, since I love plot twist - that's the kinda thing she will discover at the end.