She asked, I said no, yet I found myself headed in to the dumps because she was "free" to do what ever she wanted.
I can absolutely relate to that kind of resentment! No advice or suggestion, just know that partnerships are not often equal. Hopefully they balance out over time.
If you aren't sleeping well with your CPap, maybe you need a current sleep study and a new setting on your machine. My settings haven't changed in years, but I've had occassional probs with the mask, and one time the cat clawed a hole in the hose large enough to loose significant pressure. Do Not, Ever, attempt to patch a leaking hose with duct tape... stinks so bad you won't sleep a wink!
Perfect relaxation, for me, is a hot tub with forceful jets - which I don't have. Music, hot showers, meditation, massage. Aromatherapy with candles and/or incense, essential oils, etc. Reading, or books on tape/CDs. Above all, I need quiet time.