Nina Dobrevs mom likes to show up on recordings of Vampire Diaries, where Nina plays one of the lead roles. But what Nina is not happy about is that her mom likes to tell about how she can improve her sex scenes. "When I'm done with a scene, she begins to give me criticism," said Nina on the Conan O'Brien Show. "Kind of, arch your back with more., It looks sexier if you svankar". Conan O'Brien laughed and thought it was a bit strange.