Looking back, I knew it was a problem. S woke up breathing noisily and seemed to be gasping for breath. I took it as a normal S thing, added to surgery recovery. I held her for a few hours on the couch, woke M up to get his take on her breathing. We decided not to call 911 as she seemed better. If I knew what I know now, I would have called in a heartbeat. Had something really happened, I would have never forgiven myself. Even now, I feel so guilty - but I didn't know.