I see you have been helping her sisters out... and for what? A pathetic handful of Neopoints, or maybe a level or two. It's not worth your time...
She has what you REALLY need... magical artifacts of ultimate power!
So how about it, help her find a couple of things that she is looking for and she will reward you most handsomely. She'll start you off with a couple of easy quests, and after that they will become harder, and your rewards will be greater...
However, should you fail to bring her what she needs, you shall start from the beginning again... at the first quest... How about it? Do we have a deal?