Bending dreams

Sheria was only six when her entire clan was killed. Forcing her away from her only home in the depths of a thick forest. Why was her clan killed? and how was the leaf village involved? What is this being that lives inside her? While traveling to get away from her homelands Sheria ends up in the sand village. And manages to become friends with Gaara. However the village tosses her out. Making her leave him. Seven years pass after Sheria left the sand and she finds herself in the leaf village the last village she would want to find herself in what happens will she stay in the leaf village? Will she destroy it like they did her home? What was the reason behind her clan being killed?