Hi Trey, 
What an amazing story. You are 70, and your mother is 93? Both still taking an HRT, wow!! That's awesome!!! I'm sorry to hear of the problems you have had though. That study caused a lot of suffering. 
My sister, (she's a yr. older than I am), had a hysterectomy when she was in her early 40's, and was prescribed Premarin. A few yrs. later, I was on it too. When the controversial study came out, she panicked, and stopped taking hers......so did I. The mood swings were quite severe....couldn't sleep at night, and the sweats made us look like we just stepped in from the rain.  
I still have periods, and I'll be 57 in November UGH!!! To make a long story short, after extensive research, a few yrs. ago, we both decided to go back on it... I feel so much better, and she said that I saved her life. Her husband jokes it saved their marriage.   
I am going to tell her about you. She will be so happy to hear of another  HRT success story.
I know that just because other ladies made it safely through menopause while taking HRT, it doesn't mean that everybody will. It's just nice to hear the stories of the women who do.  
Thank you for posting, and I sincerely hope everything works out for you.
Take care.
Platte