Like children, Rose Granger-Weasley and Albus Potter are best friends. The family assumed this would still happen when the two cousins started attending Hogwarts together in 2017, but things didn’t go according to plan. When they boarded the Hogwarts Express, they found Scorpius Malfoy sitting alone in a compartment. Knowing all about the Malfoys, Rose decides to find another place to sit, but Albus decides to stay and continue to be friends with Scorpius. The two boys developed a friendship, and when Albus was assigned to Slytherin when they got to school, things only got worse between the two cousins.
Scorpius, however, turned out to be nothing like his father at school. While Draco Malfoy never had anything nice to say about Hermione Granger, his son was quite fond of Granger’s doppelganger daughter. Scorpius mistook young Hermione for Rose when he and Albus wielded a Time Machine and tried to prevent Cedric Diggory’s death at the Triwizard Tournament all those years ago. They are being manipulated by a girl named Delphini, who poses as a Diggory but is actually the daughter of Voldemort and Bellatrix Lestrange.
As Scorpius and his father do everything to stop Voldemort’s secret daughter, Rose begins to see that not all Slytherins are bad, and as a result her relationship with Albus begins to heal. mounted. She still refuses to date Scorpius, who still believes they will get married one day.
https://www.looper.com/733684/the-entire-weasley-family-tree-from-harry-potter-explained/ The Complete Weasley Family Tree From Harry Potter Explained