Serpents and Sunbeams

Kassandra Lumen, daughter of Apollo has not adopted the healthiest coping mechanisms after the wars. She decides she needs to get away, go somewhere new, staying at the camps, staying in her cabin that is so much emptier that it should be is too hard. Rather than allow her out into the world alone, Chiron sends her to Hogwarts.
The wizards, descendants of mortals who participated an a ritual with Hecate in Ancient Greece, have just emerged from their own war, and after four months of mourning and rebuilding, the younger generation is headed back to Hogwarts, including eighteen year olds who wish to return, or who are made to, by condition of their parole.