who is this girl, what anime is she from and why is she crying

thats anaru from anohana, if i told bạn why she is crying then i would ruin the story for bạn ;D
check it out, it has only 11 episodes, bạn can watch it on mangahere.com with english sub ^^
haha, i cryed my soul out on this anime, really good :')
on my pic, anaru is the một giây from left ;)