I can highlight two elements in this shoot (the ones I immediately noticed when I saw this picture by the first time): 1) the reddish brown on the front against the degraded blue-gray on the background presents a very elegant proposal. 2) Mixed with the discordant colour compositions, the short dept of field gives a lot of dynamism to the image, making it easy to read. The eyes go quickly to the centre, but the lines and the shape of the leaf guides you to different parts of the picture, allowing the viewer to travel on the whole image.
Also, textures are very contrasting and feels very much alive. It's easy to feel the coriaceous surface of the leaf by the look of it, and to believe that it could break if touched without care.
Lights are very intriguing and discrete but, I deem, an intense kick light, with a proper angle, would have give a very dramatic chiaroscuro effect to the photograph, rendering it yet more astonishing.
The "leaf" theme is a recurrent one; nevertheless, the specific selection of colours, the angle of the camera, the particular way of doing the close up, and the way she uses the lines (including those of the leaf veins, which provide an interesting rhythm), makes of this photo a very different proposal and a very tasty work.