Before you worry abut how you write them, think about who they are. If the characters are going express who they are through every action and every word you have to have such a fundamental understanding of each of them. This is everything from their fundamental motivations (and "just to meet him" is not a very interesting motivation) to their childhood to their compulsive habits like chewing their nails.
As for what she can give him, don't limit it to the tangibles, think of the intangibles too: a kiss, an idea, a friend, confidence. It is very easy to enter cliche territory here, but objects can also represent something intangible, like a memory of his dead father or something that will become a memento of his career in wizardry. What is important to this wizard or his life?