Kay was glad that Bane was healing. When he apologised to her for dying and having to resurrect due to saving him, she gave a small genuine smile and squatted down slightly to hug him. "Don't apologise Bane. You have nothing to apologise for. It was my own actions that lead to it. I was losing control of myself and I paid the price for it" she told him, hoping it'll be of some assurance. She also truly believed her words to be truth, and didn't want him thinking he had to try and repay her for it. She then stood up again, letting go of him, "I should go check on John" she then told him, then walked downstairs and eventually found John pacing around and muttering to himself. 

"You didn't go to sleep did you?" She greeted him, walking up to him in the hopes it'd stop him from pacing. She could just tell he didn't go to sleep from the look of him and how he was being right now, wishing that one night he'd actually follow his own advice to the rest of them.