S2E2 What did Helena know?

When Helena and Cobel are speaking in the board room, Helena tells Cobel “I personally owe you a debt of gratitude” and Cobel responds “it cost me dearly”… I’ve wondered before how Helena could NOT have known about the suicide attempt, given her outtie would have woken up with bruising around the neck. Did Helena know about the attempt and ask Cobel to keep it from the board? That seems to be what this exchange is implying. Why would Helena want to hide that? Just ashamed of potentially failing as the innie version of herself? And/or shame that Helly is exposing a truer version of herself?