Happy Endings and Secret Love

Regulus fell in love with a Veela, they got married and had four kids. But sadly there aren't any happy stories in the Black family, Regulus was dead.
Effy, their youngest daughter, was in her final year of Beauxbatons Academy of Magic when she saw her mother die at the hand of "You-Know-Who". Now she must move with her estranged Uncle, the one and only convicted murderer, Sirius Black. Over the summer she meets a group of wizards and witches in the Order of the Phoenix, and some of the kids involved as well. But no one gets on her nerves more than Fred Weasley.
This is their story...