Spent an hour pulling on her dress but I can't get it off. There does not seem to be a zipper or any buttons.

There is no zipper or button, you have to pull it of. It's not easy.

It helps if you use "C" and "V" and your scrollwheel.

You're referring to her skirt, right? I found that crouching a bit and clicking and dragging down her skirt on either side of her hips, while using the scroll wheel, then doing the same to the other side, works well. Make sure to use that scroll wheel. It helps!

Is it not buttons in middle.

No buttons, just tedious pulling work...

What also helps is pulling from all sides. So go around her and pull a bit form each side.

I stand close to her, then click on the left side waistband, pulling it away from her, then use the "c" to lower myself completely, essentially pushing the waist band towards the floor. Then I raise up to stand, clicking the right side of the waistband, then repeating the steps of the left side. The skirt usually falls in those two moves