Yeah, this does look way soft, but there is that tell-tale look that it was IN-FOCUS. Definitely, we have seen that mushy soft look here on TPF before, and on FB and other places....they are crushing your shots. I can tell that things have been resolved by the lens, but that the image is being brutally smeared by the host site. In this shot, you now can see she has a nice chin. In the first shot, her face looks squareish...this shot shows a definite chin shape, and cheek contours, and her hair looks prettier.
Looking at the behind the scenes shot, I think you have the octabox positioned awfully close to the camera/lens axis. in this shot, her body is turned away from the main light, which gives her an under-chin shadow, which is a good thing!!! her NECK is darker than her face--a good thing! You're following an old studio lighting tip: turn the body away from the light, then turn the FACE back toward the light. You have also made her slimmer; in the first shot she was 7/8 of the frame width; in this shot, she is about 40% of the width of the frame. Which...is a horizontal frame, for no apparent reason...
I think the fill light needs to be moved UP, to camera height. She still has bags under her eyes; in this shot they are becoming darker circles. For photography, extra under-eye concealer is useful for her or any woman's makeup.
I think the main light is positioned too high and is not being aimed/angled optimally. Why? lack of eye sparkle, eye bags, and the shadow being cast by her upper lip. The octabox is angled not quite right. i think it is "raining down" too much, and needs to be aimed more at her face, and also lowered a bit too, to soften that shadow her top lip is casting on her gumline. This is the difficulty of working alone, and with new equipment; it's hard to actually, literally move the light and se what it does when it;'s high up and on a boom like the way it is shown in your BTS shot. There is a LOT of light fall-off between her forehead, and her chin...the light is not aimed quite right to maximize her beauty. We need more eye sparkle,a nd a slightly different shadow pattern on the lip. The main light needs to be brought lower, and aimed with the face of the box a nit more angled noon and six pm...you have the light "raining down" too much, so the eyes are not sparkly, the forehead is too hot, the chin too dark, and the upper lip is casting a shadow.See how very little of the main light is forming the catchlight on her eyeballs? The main is way too high!
The thing is this: I learned to shoot 20+ years ago in a studio with 50 degree parabolic 20-ich reflectors, which are EASY to AIM. You can SEE the catchlights and see the shadows easily, so you can literally stand there and grab the light and move it through an arc, and place it right as far as height goes, and angle, and so on; with the octa, which is a big, clunky light on a boom, you cannot easily do the same, and you have this massive swath of light that really hurts your aiming it EXACTLY as it will best flatter a person;s face and pose. I don't wanna be tearing your down, I am trying to help. You need to be able to GRAB the light and literally move it through an arc, and a height adjustment, to get the RIGHT, the exact right placement and height and aim of the light. My suggestion is to work with a smaller light source, so you can get a better feel for exactly how critical the height and angle and tilt of the main light is. When the subject is tired or bored, they are not helping much either.
I think if you look at the first shot, and the second shot, and read my C&C you'll see what I mean about her face shape, and so on.