as to Carly freaking out in the elevator. The elevator is much like the coffin that she was buried in by Viviane. She couldn’t get out of the coffin that had been buried and she was left with little oxygen. It could cause a flashback freak-out (pts).
Just because she stabbed Lawrence and remained calm to me is more related to her being a doctor performing surgey with lots of blood and body parts – blood/life/death don’t really freak her out (she is a doctor who deals with it daily) in the same way as being stuck in an enclosed place would.
JMHO