It's possible that there are artifacts on your green screen. That's why it's super important to keep your green screen clean. If there are any hairs or shadows or anything like that, you may end up with a bunch of artifacts in your final product.
Bangs are hard to cut! You really have to take a step back periodically to see how they look in the context of the haircut. But they're just fairly challenging...
The first step is figuring out where she gets the phone. Does she get an allowance and use that money? Stop her allowance. Her friends? Limit interaction with those friends....
Avoid wearing a t-shirt or something too casual for a top. A button-down top or a polo shirt might be good. Also, try to stick to more classic styles: nothing...