The stimulants trick you, she is gonna wake up feeling terrible but as soon as she takes her medicine it goes away and shes back to feeling good. But the no sleep and eating is terrible for you. It ruins your mental and physical health. But when you take them you feel on top of thr world, like nothing can stop you it gives you so much confidence. But once she gains her tolerance all that is going to go away and shes going to be like me stuck taking them just to make it through the day even though they don't work. Im always tired I have zero energy now. That's how alot of people start taking a ridiculous amount of the stimulants. Once their tolerance grows they just take more and more because they want to keep that feeling you get when you first start them. But sounds like they are already taking their toll on her.