Black's Return {Jade Book 3}

Jade Evans learns just how problematic it is to have a somewhat dark past when the Dementors - soul-sucking, happiness-leeching creatures from the wizard prison of Azkaban - become a daily part of Hogwarts life. Plus the constant danger of murderer Sirius Black, and the creepy black dog that keeps showing up everywher...

The Parselmouth and the Basilisk {Jade Book 2}

Jade Evans learns that her deceased mother, Lily Potter, is a distant but direct descendant of the famed Salazar Slytherin. Things go downhill from there.