Counting Stars

Katherine Black, was the twin sister of Sirius Black, older sister to Regulus Black, she went missing when she was hardly seventeen years old, one days after her battle with the Dark Lord, where she ultimately came out victorious, she vanished. Many presumed she had succumbed to her injuries and had died in one of the big houses of the Black estate.
Only the Blacks could tell that she was alive and well. For her picture on the family tree had not grayed like it was suppose to do when a Black died.
They where left wondering where she might have been hiding. Wishing one day that they would know what happened to Katherine Black. Hoping that they might once be reunited with their long lost family member.

Harry Potter X Twilight crossover