She has an adoptive aunt named Jenna Sommers who serves as her and Jeremy's legal guardian in the first two seasons of the series.
She is the descendant and doppelgänger of Katherine Pierce.
In the season two finale, while Damon is dying from a werewolf bite, she forgives him for forcing her to drink his blood and kisses him. However, in order to convince Klaus to give his blood to Damon, Stefan had to turn into his "Ripper" self and accompany Klaus.
In season three, Elena does everything in her power to make Stefan regain his humanity, which he switched off to satisfy, and tolerate, Klaus.
In season one, surviving a car accident which killed her parents, Elena reluctantly returns to school for her junior year and begins dating a mysterious new student named Stefan Salvatore.
It is later revealed that he is a 162-year-old vampire.
She claims that choosing Stefan was the best choice she'd ever made.
However, their relationship ends due to her heightened feelings for Damon.She loses trust in Damon, partly because he killed her friend Aaron, so they break up, but soon get back together.Once Markos and his Traveler army begin to take over Mystic Falls, Elena and company come up with a plan to neutralize the Travelers by killing them all at the same time, overpowering Bonnie – who is now the anchor to the Other Side – and creating a possible way out of the collapsing dimension.The sacrifice later takes place, but Elena is saved because John sacrificed himself for her after Bonnie magically enchants him.However, her Aunt Jenna is turned into a vampire and, as part of the sacrifice, is killed by Klaus, leaving Elena without a guardian.It is eventually revealed that Elena met Damon the night of her parents' death, though he compelled her to forget.