In Angie's line of work, it pays to be perceptive. So of course, she picks up on the shift in Karen's tone.

There it is. All the proof she needed.

"No, it isn't. I'm assuming you didn't come up with it?"

She would like to have faith that Karen won't try to lie to her to her face about her alter-ego, but the best way to prevent that is to address the issue head on.

"Karen... Why are you doing this?"