The bare patches are normal, so don't panic. Make sure you go to your character area (top menu bar - scroll through or look in the manual) and turn off IK (Inverse Kinematics) for both of her legs. Then Zero her. When you apply the pants, if they are made specifically for Victoria, they will fit perfectly when you conform them to her. If per chance they don't, then you can go to each of her body parts (the hips, thighs, buttocks etc, and turn them invisible ~ problem solved, no more flesh shining through :)