Decades ago

Lillian Verès is a vampire werewolf hybrid who activated her werewolf gene when she was 15 back in December 24, 1322 on Christmas Eve when she accidentally let her temper get the best of her and killed her father who was trying to get her to marry a man she never met... after a bit of blaming herself she eventually ran into klaus Mikaelson who decided to take her in and teach her about being a werewolf since he was a hybrid eventually he gets curious and used Lillian to create a hybrid by feeding her his blood and killing her this happened roughly when she was 17 years old. About 700yrs later Lillian was on her own and eventually found herself in mystic falls and was curious about a school for the Young and gifted their she found out about Klaus's daughter which gave Lillian horrible flash backs of klaus. Eventually she found herself helping out the school and staying somehow able to convince Alaric saltzman a retired vampire hunter to let her stay.