I believe the environment around the butterfly is overexposed and I thiiink the focus is on one of the leaves instead of right on the butterfly, but I could be wrong.
Great capture of the butterfly! I'm surprised it came in blurry for how much light is actually in the picture but then again if she used a faster shutter speed it would have fixed that light and blur.
Also, a personal preference would be for the wings to be centered instead of the thorax and head being the main point of focus. It looks hard to do and I've never tried it so it's a valiant effort for a first go!