Hi Peacelove, Welcome to SR!!!
I'm glad your sister is seeking recovery! That's wonderful news!
About the adderal, only she and her doctor know for sure. I, too, am on the low-end spectrum of Adult ADD. I do not use medication. It is my current understanding that some folks are on medication for this condition their entire lives. Sadly, it is an easily abused drug and in college, kids can and do abuse them to get ahead.
But for some, Adderal and other ADD meds are literally life savers allowing the person to function normally in society.
If you are concerned, you might encourage your sister to discuss this with her doctor.
HG