Here is my version of her portrait.
I didn't like the rotation of the crop. So, I rotated it a bit and made other adjustments like blurring her skin and hair, sharpening her eyes, lips and teeth.
I rather like more informal portraits than these, studio made. However, I think you have done a good use of the available lights on the studio. I wouldn't have done better than you have.
Do you like my version ?
Oh something else I was going to forget: I was going to clone the support of the bra (yes laugh) but I am very poor on CS#. Sorry.
I think she would be better without it like suggested in another version.
It gives a more sensual mood to the person.