So the light position wasn't ideal; sometimes that's a fact of life. Okay... sucks, but why not adjust the model? As Derrel said, the position of the key light is causing a less than desirable shadow line under her eyes, cheeks and nose, but if she tilted her head back a bit more, you might have been able to get something. A lot of times your ability to make lemonade out of the lemons you're handed is as important as the camera you bring.
This is what I was allluding to last night when I wrote, " ...a
lighting scheme that's not ideal, for her, in this pose. She seems to have dark eyeballs,and the main light's position emphasizes the under-eye lines that she naturally has, and is causing a fairly unflattering lighting effect on her mouth and teeth"
When the main light is high and mostly overhead, having the model angle her face upwardly, can create some neat lighting effects. This is something you'll often find in places where there are overhead "can" lights (recessed into the ceiling), and they cast strong, straight-down shadows. Kitchens, stair wells, and office areas can have this type of strong, almost directly-overhead lighting in many buildings.
Same thing happens when shooting in strong, direct, outdoor sun-lighted conditions. You can _NOT_ adjust the main light, so you have to move the model around, in relation to the light. A few degrees of upward lift on the face can turn odd lighting into better lighting, just based on the source/subject angles.
I totally,totally "get" that this was one of those step-up-and-shoot scenarios, where you're kind of under time constraints,using somebody else's set-up and so on. Still...it does show off some neat technical stuff, like the D850's low-low ISO range and incredible resolving capability. I think perhaps if the teeth and that shadow on her gum line area were expertly lightened up, that this would make a much stronger picture. That shadow-y-ness on the teeth and gum line area, is for me at least, the main issue that detracts on this shot.