Totally understood, Izzie, but neither of us are likely seeing the image the same way and image size has a very large part to play in how a sharpened image is viewed. First of all, it has to viewed at 100%, so in this case, it has to be opened in Lightbox and zoomed in to maximum size. That is how I viewed the image when I sharpened it.
If you are viewing on a large screen (I use a 27" screen), then we might be looking at more or less the same image. If your screen is smaller than mine, then you will likely see a sharper image than I do. The way sharpening works it enhances areas where tonal contrast exists. What that means is that where light and dark areas of the image meet, the darks are darkened and the lights are lightened. When viewed on a smaller screen the scaling comes in as does a bit of an optical illusion, these dark and light areas appear more contrasty when your browser downscales and the end effect is that the image will look sharper on a smaller screen.
There is always the "personal taste" factor as well, some people like things to look sharper than other people do.
Like so much in photography, there is no right answer, but it is important to understand why different people with different equipment might view this differently. The only way that we could have a meaningful discussion on the merits of the sharpness is if both of us were looking at the same print.
Regardless, when I look at the original, it needs some sharpening, the amount and where the sharpening takes place is variable (this is the part referred to as "in-process sharpening". If I had the original file, I would probably soften the neck a touch, but the eye, head and body, I would probably treat the way I did.
Here is a side by side comparison of the before and after. Again, these should be viewed at 100% in Lightbox.