Why cany Bella make Harry an adult?
After Harry got a new wand, the tracking spells were not taken off.
Why did Harry need a new wand any way?
Author's response
Interesting points raised. Many people utilize the concept of emancipation in their stories, but I've decided on a slightly different perspective: there is no such thing in the wizarding world.
Harry needs a new wand precisely because of the tracking spells placed on it. Students at Hogwarts all have wands with traceable backgrounds, and Harry having a custom-made one is like an invitation for the ministry to pay more attention to him and be sure that they cast whatever spells they use to track magic on him. Getting a wand the legitimate way means he has a wand that the ministry doesn't know about that he can essentially do whatever he wants with. Having two wands against Voldemort will be helpful as well.
Sorry about the lack of updating, World of Warcraft has clawed its way into my life, and I am, for the moment, completely in its power. That goes for all of you reviewers out there. The progress is slow, but still progressive. Gotta love improper word usage.