Affiliate Marketing Secrets

Some girl stole my iPod. There seems to be NO evidence pointing to her. However, on her email and Facebook account (messages), there is TONS.
Okay, so here is the back ground information:
-I am underage, 15.
-I talked to the school cops, but nothing yet.
-I have the passwords to both this girl’s Facebook profile and email.
-There was not much proof, but there is TONS now.
-I realize it is invasion of privacy.
-There are so many messages proving her guilty (on Facebook).
-On her email, it says she has used my iPod, which she stole, so many times.
-She is gang-affiliated.
I need help. I want it back. We know who it took it and want it back. They told me if she was found guilty I could press charges, but could she also press charges on me for looking through her stuff?
I’m scared and confused.
How much trouble would I get in if I took pictures of the evidence and presented to a police officer?
What would I say?
A school English teacher said that it was evidence/proof and that I would not get in trouble myself.
Although, some other kid told me I could face 1-5 years in Juvenile Hall, then prison.
Any help with the legal stuff?

English is my favorite subject; I’m really passionate about it. I work soo completely hard in it. My teacher makes us write a journal and I’m so proud of mine. I always in it and I’ve been told my work is insightful and such…blahblah. however, compared to this boy in my class, I am considered nothing by my teacher. He thinks this boy is the best thing since the invention of sliced bread. we are juniors and he has been in my english class since freshman year. He is very intelligent and definitly better at me in math and science; but not English. I know I’m boss at it. It’s the only subject I feel excited about; I feel like I’m in my niche. I’m getting really depressed that I work so hard and although I am comended, in my English teacher’s eyes, this kid is God. I don’t know what to do. It’s really bothering me. I guess its because I look up to my English teachers and now the fact that this one thinks I’m inferior to this boy is bothering me. I know in life there are going to be people better then you at things; that’s life. Yet, I know I’m a much better writer and have much better insight than this kid. This is not to be cocky; its just that english is my strength and his lie elsewhere. I’m so frustrated that I spend so much time making my journal perfect and now I feel like I’m just wasting my time. Please help!!!!! am I a psychotic; obsessed with being the best? or is it I legitimate to feeling this way?
ignore all my typos; im feeling lazy 😛