Have u thought about
treating UR mom to teas.. Flavored? They have a lot of caffeine yet they too can make the heart race IF to much. Amount given will be a fine line just like any other meds. Or Caffeine drinks. Ask the doc.
I totally understand UR goal. Is that in her best interest to stay awake more? Perhaps doing exercise or structuring her time to interactive time with her will stimulate & train the brain in a more positive direction. Getting her a cat... Any pet? Bird. Those are the things that add comfort and entertainment...focus... Perhaps a friend with a dog or cat . U can contact a hospital that uses pets for the elderly & hook u up. I did that for years.. They wake up and stay interactive longer with a pet. Play time etc.
No I cannot take any drug that speeds up my heart rate. I am in my late 60's. I do however have control over my movements ... With Many types of arthritis and hip joint replacements & FM. So I have no choice but to physically slow down. I can honestly say that I understand my disabilities mentally and physically. I do take anti depressants which I have had as a life long issue with ADHD. HEY Einstein had ADHD!
I have no experience with Provigil. I will look it up. If a stimulant of any type not a solution. Activity is a good positive solution for her....keep her interacting with various structured activities. It's tricky but as u say don't give up on finding activities that work for her needs.
Worked very well for my mom with dementia she had a noisy little chihuahua. Yikes my least fav dog and I am the biggest dog lover ever. That was her choice and she helped take care of her pet. Wake her up in time to feed her pup etc. then it's not u doin the chore it's the dog. A Whole different driving mechanism.
Interaction with her is good for u both! Plz check w/ur local hospital into cognitive behavioral therapists for her, that is another direction to help ur mom.