• to defeat a bad guy
• to rescue someone
• to attain a prize
• to reach a destination
• to stop something from happening

what does she have to do? 

one of few magical beings, grandmother taught her.

she needs to get somewhere (home, maybe), and (obviously) stuff happens to her on the way

there’s a ruling group for her people, she needs to help [save someone, defeat someone etc.] them. they work in tandem with the gov. (hmmm… or maybe not >;)

don’t want big family reveals at the end (ie. omigosh, you’re my brother?!) 

or we could go with the whole “need to figure something out” thing in realtime. maybe, family secret?