I just placed the call to put my mom on hospice but the hospice nurse won't be out to the house till tomorrow morning. She refused oxygen last Friday when her doctor suggested it and has been hallucinating since Sunday evening. At least she isn't in any pain. How low does her oxygen level have to get before she just goes to sleep and never wakes up? It is currently at 84 or 85 and I can only keep her awake for a minute or two at a time while trying to feed her and give her meds.