School Drama Play- Quite Similar To Vampire Diaries :) Need some good help!?

Katherine Pierce doesn't take s*** from anyone and doesn't let people know if she is affected by things. She always has the upper hand in matters and acts superior to everyone else. When Nina Dobrev plays her, she makes her voice slower and deeper than the voice she uses for Elena. Also, she seems very bored most of the time, as if she thinks she has better things to do.