For one thing, expect Elena to rely on both Salvatores as she transitions into a vampire. “She is leaning on both of the boys, and all her friends, in a big way for support,” says Nina. “Everyone helps her in different areas, but she's not very independent in the first part of the season. I think that'll come, but we're not there yet.”
She added, “Elena is still Elena in almost every single way, but there are definite changes. She's going in a different direction with the way she acts and what she does — I think people will be surprised by the shift."
One thing that will remain the same, however, is the romantic tension between Elena and both brothers. “There is a definite shift that makes it, in a lot of ways, very much like the triangle we saw in Season 1,” Nina explains. “But it's very different because, yes, the boys are still arguing and having differing opinions over how she should lead her newly vamped life. But while their arguments remain the same, her perspective is very different now that she’s a vampire.”
The scales tipped in Stefan’s favor at the end of Season 3, but who knows what will happen now that Elena is a fanged force to be reckoned with!