If a fire broke out on a bus, the kids would be evacuated and then the fire extinguisher would be used. Is there oxygen on a schoold bus? That is a more accurate analogy.Some emergencies cannot be planned for. It sounds as though this poor woman had mulitple issues. To put the blame on an airline or flight crew is looking for someone to blame. Sometimes there is no one. Crap happens. There are some risks when you fly. One of those being medical care is miles below on solid ground