She starts rubbing your new clit, it feels a bit like how having her rub your dick felt, but it's so odd with your new proportions. The pleasure is intense though, it feels way more sensitive then your dick did.
You start to get a bit embarrassed about being touched like a girl. Your girlfriend then touches your face and says comfortingly, "don't feel badly darling, I won't judge you. I've had a lot of experience playing with my vagina, it's right that I help you feel good with yourse."
She starts sticking her fingers inside of you. It feels so weird to be penetrated like that, to have someone inside you. But it feels so good too, your entire body is filled with a sensation of alien pleasure. It feels amazing to just lie down and have her please you.