Kate was born by a elf woman and the Pope of Tethe'alla. As her father tells how he got old while she remained the same, it is likely that she is older than she appears. The way Kate tells about her relationship with her father, it is possible that he hardly ever visited her, and she possibly lived with her elven mother. However, the Pope most likely tried to get to know Kate, as he himself states in the present that he watched his daughter stayed the same while he himself aged, something he eventually terrified. Eventually, the Pope of Tethe'alla established the law that forced half-elves to be prisoners in the laboratories of Sybak, leaving Kate to be held in the laboratory for the rest of her life. About twelve years before the storyline, Kate's father visited her and wanted her to lead the Angelus Project and experiment with Presea Combatir together with the dwarf Altessa. Happy that she could finally be of some help for her father, she accepted.