My Wife Denise sadly passed away on 1st December 2018 at 1am, prior to this she had a what I can describe as a respitory mask on forcing oxygen into her lungs but also making sure she exhaled, for the whole of the day she was I can assume in & out of concionous but when I got the call to go in eyes were shut, the hospital staff told me nothing more could be done for her & the wanted my permission to remove the mask but to still give her oxygen via a 2 pronged thing up her nose & as they explained her breathing would get shallower until she took her last gasp & then she would have passed, my question would she have known she was dying as she never opened her eyes or any movement during her last hours?