This is off the beaten track for you and its nice to see you take this route, the long exposure against the sunlight has worked well, the old woman appears almost ghost like and that adds all the more to the image.
The only downside I can see is the breakup within the higher branches of the tree, I presume this is due to movement such as wind, it has though caused some aberration in the light, I would suggest putting this through Lightroom and play with the levels in the Chromatic Abberation tool with it set on "All edges"
Yeah, i think it was on flickr, but it's also possible that i'm a bit confused, because it's quiet late and i'm still learning for 2 exams tomorrow. Maybe it was kinda deja-vu or something. But i swear i've already seen this picture -.-' sorry if i upset you! Didn't want it. And finally i hope you understand what i mean, because my english is not the best...
Looks ok, I dont really like the ghosting with the tress and for a lack of better word 'atchy' or aliased color its produced in some areas. I prefer the smoothness in your other work.. but as you said this is an experiment and still turned out nice.