I enjoy how you drew her expression, as it seems like she's horrified at what's happening to her. I also like how how you drew the cookies sticking to her, like it's some kind of goo. Remids me of R.L. Stine's Monster blood. However, I will have to agree with your other critiquer; the window does distract from Pinkie Pie. I would put some more light in he room, perhaps making a bright crescent moon outside that shines moonlight onto her form. It's a bit too dark inside to see much detail. Other than that, I see you're taking my advice about using that style for action scenes. Thank you.
Not as good as some of your other pics, but still has that eerie feel to it, and overall, I'm happy to have taken time to examine it.