Her mother was a hyuran housemaid and her father was an elezen noble. I don't know what further confirmation you're looking for that she's a halfbreed. Even her chosen title, "The Mongrel", points directly to this.
Chris Ganale | R'tahz Tia | Yuuna Akashi | Chao Lingshen | Seno Nakakami | L'dran Cresnoble | Garon Crayson