You're right, but that is a compromise I had to make.

Given the small amount of vertices available down there I had to find a shape that makes best use of each single one of them,
If you look at V4's geometry in "Hidden Line" mode you'll see what I mean.

Bringing the two closer together would have meant an extensive morph which would also extend into the thighs. However, the crotch is one of the most difficult areas in V4 to rig and weight map.
You have the thighs moving in all directions and twisting too, plus the KV which must move with the hip mesh and still look good with her other morphs.
Add to that that everything is very close together you have a rigger's nightmare with only a few centimetres of room for your morphs and weight maps.

Karina