There is an adhd forum on reddit she (and you) might find useful where others share their experiences. One of the top posts describes having ADHD as holding marbles without having a bag while everyone else has bags... let me find it and copy/paste... here:
“ADHD is like everyone has to hold 100 marbles and you're the only one without a bag.
You’re trying to manage the same stuff everybody else is able to manage but marbles keep falling out of your hands.
And neurotypical people are giving advice like "well, why don't you just put them in your bag?" BECAUSE I DON'T HAVE A BAG.
Maybe you're struggling to carry only 50 marbles, and you see people around you easily managing 150, which is bitterly discouraging.
But the fact that you can even hold on to that many is incredible BECAUSE YOU DON'T HAVE A BAG, BUT YOU'RE STILL TRYING.
Medication is like having a bag with a hole in it. It's so much better than what you're used to so when you start using it you feel on top of the world. Then you notice that marbles are slowly falling out and you think "what's the point, it's just as bad as before." But you have to remember it's still worth it.
The worst thing you can do is trip on the marbles you've dropped. That's my biggest struggle. I focus on one little thing I've messed up and all of a sudden I've come crashing down and drop all the marbles I was able to hold minutes before.”