Your aunt should not have done that. It's not that unlike a drug pusher trying to get a person addicted to a med. I assume she didn't mean harm, but she could be causing a lot of harm. Please tell her to stop offering them to you. If you feel fatigue is a major issue seek help for it from your psychiatrist.
In my state, what your aunt and you did with the Adderall is a crime. If my possessions were searched by a cop and they found I had Adderall without a prescription, I could be charged with at least a misdemeanor crime (even with just a few pills of Adderall) since it isn't prescribed for me.
Does your psychiatrist (bipolar medication prescriber) know you take St. John's Wort? I see that in your medication list. I wouldn't have normally asked, but since you seem willing to take unprescribed medications it makes me wonder.
I want you to know that I understand the frustration with feeling too tired and unmotivated to get things done. I've had those periods, too. I had a couple issues starting to abuse stimulants. They turned bad. It was better for me to work closely with my psychiatrist to find better solutions, without abuse potential.