She was a half-blood witch originally from Kazan, her father an adventurous Irishman who'd been traveling for years, her mother a witch from a rather prominent pureblood family. Hermione didn't know the specifics but from what she'd heard from Dimitri, the relationship between Katiya's parents hadn't lasted long, her father heading back to Ireland, her mother suspiciously dead. Katiya was raised with her maternal family and had gone to Durmstrang.