In the Star Trek Discovery Episode E1:E6 Leethe, we see Admiral Cornwell go on a diplomatic mission to the Klingons. This results in her capture.
Prior to this Cornwell had made the decision to declare Lorca unfit for duty, because of his time in a Klingon prison and his erratic behaviour.
After her capture, we don't see Lorca organise an immediate rescue mission.
My question is: After the Admiral is captured by the Klingons, why doesn't Lorca immediately organise a rescue mission?