I think you should have shed some light on her face, it's too dark for my taste. Reflector or a slight fill flash might have done the trick. Can't figure out the marble game either.
Well meets the challenge if you understand the various nuances of implied lines. I fear many will not and that the photo will suffer in the voting. If that happens, it will be sad because IMO this is among the top 10 photos in the challenge. Beautifull caputred.
Very well done :) I especially like the literal lines of the blanket making a right angle to the implied line. I hope you aren't getting hit by the "I don't see a row of trees here, does not meet the challenge" crowd :) At first I thought the girl's face was too dark, but I checked my monitor and it needed adjustment.