Either the exposure or the PP is wrong. It is too dark.
But what bothers me most is the way she is holding herself. Most of us when facing a camera are not at ease and part of your job as the photographer is to put your subject at ease so that he/she will have a natural pose.
Now, different photogs will have different ways of dealing with that. Mine was to have the camera on a tripod so that I was never hiding behind it while shooting. I compose my shot and, in that case, a little wide to allow for movement by the subject, and then I talk to them and shoot at the same time. Remote.
It also helps in that you can go to them to rearrange the hair that has fallen across their face, or some other such thing, and as soon as you step back you can start shooting again.
That's my way. It may not work for you so, you need to find the way that works for you.