What if Renesmee had a twin sister whom was unloved by the Cullen's? They kept her on the attic for all of her life until her second birthday? What if she escapes?

What if the NCIS- family gets a new addition? I own nothing but Jasmine. cover is from: http://images2.fnpop.com/image/photos/9900000/NCIS-Family-ncis-9949624-900-675.jpg