Prozac, Percocet, razapan, and one other I do not know. I have noticed she doesn't make solid stools ever and im wondering if she is hurting herself unknowingly. She is currently in bed not able to function and I am curious if her meds have been wrongly prescribed as she is also on a breathing machine she uses during the night as she stops breathing often. What is happening to her?
Doctors don't refill prescriptions indefinitely; at some point she'll have to see those who have scripted the meds for her.
Is she bed bound? If so, this is going to present a tremendous responsibility for you and your BF.
Assuming it's for a respiratory condition, it was likely determined by a pulmonologist that she needed one for night use, when respirations can momentarily stop or drop during sleep to dangerously low levels for someone with specific conditions.
Based on Medicare criteria, there are different standards for oxygen supplementation at night vs. during the day. It wouldn't hurt for your BF to buy a pulse oximeter from one of the drug stores and monitor her saturation rate during the day, if this woman is going to be living with you on a more or less permanent basis.