Her lower half is massive! it seems like you've used two different reference images for her upper and lower halves, and they don't match. Typically the length of the legs should be the same as the height from crotch to top of the head and the width of the shoulders is often similar to width of the hips in women with a mesomorph body type. It may be as simple as just lassoing the lower half and resizing them, but it may be best to sort it out before you start adding too much detail. Either that or make her upper half bigger.