I just looked at her image and used chun-li as a size reference. But the sprite itself was made from the scratch. You can also try to find a char with similar movements and draw the dress over it,.
Why dont use Vice as base?
For the head/face, it can be ok to use vice, but for body/clothes, I'm not so sure...
you are already doing a good job of editing character A to B.now if you want to take it to the next elvel, learn to frankenspriting.