We learn that she is a former therapist, and has been driven insane by her imprisonment.
In the Star Trek Discovery Episode S1:E6 Lethe, we see Admiral Cornwell, a former therapist, taken prisoner. We know that Klingon prisons are known to be terrifying places, and it may be that this experience has had long term effects on her mental health.
The name of the episode is also a clue.
My question is: Is there evidence to suggest that Admiral Cornwell and Lethe are the same person?