Feathered Light from Honeycomb Grid Strobe

On the left I placed a stobe at a high angle, fitted it with a 20 degree honeycomb grid from White Lightning, and aimed it at the face of my mannequin. As one would expect, a pool of light surrounds the face.

Next I tried feathering the light. I aimed the high angle 20 degree gridded strobe at the mannequin's chest. The result? Even illumination down the body.

Why?

The face receives dim edge light but is also closer to the source.