She probably does need a sleep study but time doesn't afford it. My friend here had a sleep study, and had the cpap machine delivered the same day. However, I live in canada. Do you have a medical supply store nearby you could rent one from? I know from what my friend has told me of them they only turn on (blow) when they note you have stopped breathing... So it's not something that would cause her any medical issue if you use it without having the study first. Maybe talk to her dr.? best of luck