He was too shocked to proper react

"Earlier I noticed you being more of a girl than a boy. So I thought I should let you experience what it would feel like to look like one." She walked behind John and shoved one hand under his skirt, which he hadn't noticed until now. "But don't worry. Beside the clothes, the breastforms and a feminine wig you are still the same." She rubbed her fingers on John's panties and his penis in them. "So properly speaking you are now more like a girl with a cock, who you love so much." She rubbed on his penis so much with her hand that it got lightly erect.

But then she took her hand out, pulled the jacket's zipper fully up and slowly pushed John out of her office. "I'll see you in a few days. Until then you should have some fun with your temporary feminine looks."

Just a few seconds later John found himself standing on the street before Dr. Valentine's office still dressed like a girl.