It can be hard to dose clen right from person to person. If she in some way would take to much, the sides coud be brutal. I ended up in hospital when I tappered up to 100mcg ed, wich really isn't that much, -throwed up every 10minutes a whole day (urk!). Because of clens long half-life the active dose builds up in your body and suddenly you could get a dose your body canæt handle some days after you've run the same dose.
Also clen affects the heart, mine bumps hard like crazy when I'm using it, meaning high-blood pressure in other words. I wouldn't give any meds that affects the heart-muscle to anyone at that age.