Yeah, I noticed the same thing. LOL She's leaning back and just kinda hovering there. Her arm is back in the position of support, and if you check the patterns of the carpet and several other things, you can see it's clearly Photoshopped (cloning tool). lol I love FoxyCougar's attentive eye about the finger being cut off badly. lol
if you trace the white where her arm should be in the carpet, it creates a "ghost effect" almost where the arm should be, maybe thats just a coincidence though...