She doesn't like wearing the oxygen, so she keeps taking it off, and she has also turned down the machine to 2. She thinks 2 stands for 2 Liters. The machine originally was set at 5. Now she constantly complains of back pain, her legs hurting and cramping, no energy. She states her oxygen on her finger still says 95%. I feel that her oxygen is not sufficient and she needs to turn it back up and quit taking it off so much. I have tried to talk to her, she won't listen. I would like another opinion.