Derek Hale did not trust anyone but HER, his only exception...

My alarm goes off at 6:30 as usual another day of school, I hear my brother Stiles talk down stairs with Scott. I groan and get up ready for another day of torture called school. I take a long warm shower and get dresses on my red skinnies and black shirt putting on my black Convers and letting my hair down, my brown really curly curls falling over my back as I do my make-up light. I head down stairs and see my dad, Scott and Stiles.
"Good morning" I say and smile at them. They look at me and smile.
"Morning" They say, I shake my head and take a piece of toast, and some tea. I walk out the house and wait for the boys to come out as I get in Stiles Jeep. As we head to school I see Derek's car parked on a parking space. I knew who he was everyone did, to be honest I had a massive crush on him. I am 16 and all but he is very good looking. I've noticed he is always around my brother and Scott, like ALL the time.
"What is he doing here?" Asks my brother to Scott, Scott shakes his head and shrugs.
"I am not really sure" He says and gets down the car along with Stiles and I. I follow them to Derek and he looks at me confused, maybe because I don't think he has ever seen me before.
"Um Derek, what are you doing here?" Asks Scott. "Gabby can you wait for us-" I cut him off
"Look Scott, there is something wrong with you and Stiles don't lie to me and tell me what is wrong" I say and cross my arms earning a surprised look from Derek, I might be 5 feet tall but I am not intimidated easily. Scott sighs and looks at Derek's tall frame, Derek's pale green eyes catching my deep brown ones.
"Fine" I groans and Scott smiles, "We're werewolf's" He says and looks down at me for some reason intimidating me. I look at him and gasp when he shows me his claws and so does Scott, I look at my brother.
"Don't look at me, I am as human as you are" He smiles. I laugh and look at Scott and Derek
"Ok here is the deal, hurt my older brother and I will kick your wolfie ass ok?" I smile sweetly at them. The bell rings. "Got to go bye boys!" I say and head to my first class. English with .