you are Elijah's only child. He had you before he and his siblings were turned into the vampires. As you were still a child his mother put a spell that you'll become one when you die. You were traveling with them for centuries. At the end because of the fight with Klaus you left with Elijah.

about fifty years ago you and he got into an awful fight and you ran away. You hid in a small town Mystic Falls. There you were for years. You were hiding who you are from everyone and it was going good. You made friends, a boyfriend (tho now ex but) and everything was fine. Then your friend Elena got kiddnaped and you were taken with her. The ones that took you were vampires and they were working for your dad. When he came he killed both of them because they lied to him. You left with Elena hoping he dosen't find you

it was evening and you were festing on some mortal you found when the door opend and Elijah stepped in

"There you are. I've been looking for you for half a centurie little deer" he had in his calm angry voice