Mel - I'm so sorry you're having to deal with all this (and newly sober, too). The good news, though, is that you ARE sober and therefore in a position to be helpful. I admire your courage to stand up and try to help her make changes.
I saw this the other day in an article:
Recent census data estimates that nearly 35 million people in the United States are 65 years or older. Substance abuse among those 60 years and older (including misuse of prescription drugs) currently affects about 17 percent of this population. By 2020, the number of older adults with substance abuse problems is expected to double.
I hope your mother is willing to go to treatment. If she can get through detox, she may begin to see that the pills have been hurting her more than helping her. I think I might talk to her doctor(s) too, if it were me.
I hope things work out, Mel. Prayers and hugs.......:ghug3