You can change the proportions, but just shrinking her 90% is not going to make enough of a difference. There is a good product example by Jackie Lewin on the Marketplace here that has height morphs for Michael 3 and Vicky 3. If you take a look at waht Jackie has done, you'll see that the petite woman is not just a shrunken Vicky. I am short, but my chest, waist, hips are all the same as that of a taller woman....my legs and arms are shorter. Some people, like Jim Burton, have figured out some proportions for smaller women that work pretty well. Stephanie is not only shorter, but she has a slight, slimmer build from what I've seen. That adds another dimension to the character that wouldn't look lifelike if you simply changed the scale. I'm not explaining this very well, but I assure you that being short is not simply being 90% of someone else, anymore than being tall makes you 110% of someone else.