Well, shit. That was pretty much the only thought that ran through her mind. She's been shot, maimed, burned, even drowned before and she'd come back from all of them. Suffocating would be a new experience for her, and not one she imagined she would enjoy. If the mutant in her lung was expecting a big dramatic show, a clutching of the throat, hands waving to try and get someone to help her, he was going to be sorely disappointed.
Her knees hit the ground after a long moment, then she lay down as if she was just going to stargaze for awhile. Soon enough, with no oxygen getting into her bloodstream, her heart slowed before eventually stopping. For all intents and purposes, X-23 was dead.