I like this a lot David. I do think though that her head is a little too small within the composition. It has left her with her hair draping on the ground and her nose sticking up on the side profile. I think a slight less tilt of the head would solve both while still keeping the relaxed pose, probably even accentuate it as she looks to be almost arching herself back more than comfortable.
But that is a small point and the picture is definitely a winner, very nicely put together, well done
Cheers,
Rob