The Great War

Y/n riddle is the most powerful tribrid /siren ever known in the wizarding world she was not only a witch and siren but a vampire and werewolf that Bellatrix lestrange and lord voldemort had adopted her at a young age as her mother (a siren) and father(a hybrid) couldn't look after her and her brothers Mattheo and tom riddle are also famous for their impeccable wand skills . They left Hogwarts a few years back however when headmaster Dumbledore had requested the riddle sibling to come back to Hogwarts as something big was going down and they needed there help something bigger than lord voldemort and the deatheather something no one though was going to happen in hundreds of thousands years . They were happy to attend under one condition if needed; their father and his followers will be allowed to Hogwarts to help. Will that happen or will they have to go against their own father if worse comes to worst