Katerina: (On how Bonnie will change in the second season of The Vampire Diaries) She's going to become even stronger. But it's important she stay vulnerable too. You don't want someone to raise hell with no motivation behind it. You can never forget the loss of a loved one and I don't think she'll ever get over losing her grams. That was her rock to this world. She wouldn't do anything simply out of a hate for vampires. I don't think she could ever justify that.