スタニスラフスキー・システム
At the beginning of her career, Mitchell's process involved long and intensive rehearsal periods and use of the Stanislavski's system. She regularly involves psychiatry in looking at characters, and in 2004 directed a series of workshops on Stanislavski and neuroscience at the NT studio. Since her 2006 play "Waves", she has also experimented with video projections in a number of productions.