This is the most important voice role for the series. Claire is a former student of Indy's who has since become a Nazi defector, and is in charge of his interrogation. As you can imagine, this makes things very tense between them. She is young, about mid-twenties, and American. I imagine her speech pattern to be a bit soft, nervous, on edge. Claire is definitely uncomfortable by this task too, and it needs to show in her delivery. Otherwise, I am open to personal spins on it.