Interesting. Hair too? I guess it looks, at least to my eye, that the back of her neck, or sides where it meets the shoulders, feels a little thin, which is why I thought it was too long. If you thickened up her hair where it comes around the back of her head and reaches the shoulder/nape of the neck area, maybe that's what's throwing me off.
I would say the Troi head & shoulders layer is scaled a bit too large, and there seems to be a slightly uncomfortable angular discrepancy between her and the body she's been transplanted onto. I only noticed all this because someone said her neck looks too long and I didn't agree, so I looked more closely. Grafting heads to bodies is one of the hardest things I've done in photo editing, but I'm no pro. Here's an example of one I got almost perfect (see if you can tell me who it is):
It's former Washington D.C. mayor Marion Barry. The angle's not bad, but the head seems a bit large for the shoulders, the lighting's not a close match and the drug conviction/pharmacist gag has a potential political slant, making it kind of out of place in the GTD forum.