Her nose had strong, obvious cartilages in the tip.  When the tip cartilages are strong and the skin covering them is relatively thin, it is easy to see the curves and bulges of the cartilages.  You can see the prominence of the cartilage on the left side of her tip, and you can see the dent between the two cartilages in the middle of her tip.

In the after picture the curves of these cartilages are softened.