The respect and thoughtfulness for her grandfather really stood out to me. Although a part of it was to gain his favor, i can't help but think of all the gifts I've seen in any story, this is the best gift ever. Go girl!
She had the greatest profit of them by far, and I don't just mean the accessory. She uncovered a hidden gem of talent which is worth far more than a monetary reward. Besides, she made her grandfather happy.