惆怅

She managed a rueful little smile.

她勉强露出颇带惆怅一丝笑容。

I am unconfident and upset, and don't know that never does the mirror beautify or uglify me, it is my heart that has enslaved me to it.

自卑惆怅不知，不镜子把照美或照丑，而心让成了镜子奴隶。