I have a friend of mine that wants to be in the band but she can't because she has way to many classes and she barely sees her parents. What should she do?

Well, if you have a dream follow it, go after it with all you've got. I myself want to get really got a digital art, and to do that you have to give up on your social life.

Family dinners with cousins, uncles and aunts? Forget it, work on your dream. Give it all you've got. This still doesn't mean you have to give up on your friends, keep the hobby social, ask them for tips if the play an instrument or are good vocals.

Wish your friend luck :)