As David watched him, Tim began to change right before his very eyes. At first the changes were subtle, but as time went by they became considerably more noticeable.
Tim's hair grew until it became shoulder-length, his skin became softer, his body less angular. His hips expanded, as his waist constricted. By the time this was happening, David knew what was going on. As impossible as it seemed, Tim was becoming a woman.
David looked back at the object. It was still glowing. Could the object be affecting Tim this way? It seemed likely. But why didn't it have this kind of effect before?
When he looked back at Tim, he saw that Tim was no longer a man. He was a woman, and a very attractive one at that, especially with the D-cup breasts.
Then she blinked. "What happened?" she asked, with a much softer voice than Tim's.
David didn't know how to answer her.