Jon awoke the next morning in the hospital bed in the lab. He sat up, groaning a little at the soreness from the previous day's exertions. Then with a start, he realized what those exertions had been! He had saved a whole plane full of people! He was Supergirl!
Oh, right. He was super girl. He looked down at his naked form. It didn't look bad, actually. Supergirl was very attractive. And his penis was still there, untouched by all the alterations. Not quite what he had imagined when all of this started, but he supposed it was worth it. Yesterday had been amazing!
Jon grinned and swung his legs over the side of the bed, excited to get started saving people again. Looking around, he noticed the Supergirl suit laid out on the next bed. He stood up to walk over to it, and wobbled a little bit as his feet protested. It felt strange.
"Ah, glad to see you're up!" said Dr. Bradford.
Jon turned to see her, and quickly covered his exposed chest with one arm and his crotch with the other hand. He nearly fell over, but managed to keep his balance, though he did let out a cute little "Eeep!"
"Well, looks like the modesty programming is working well."
Jon gritted his teeth and walked gingerly over to the Supergirl costume to start putting it on. It took a bit of concentration to allow his arms to stop covering him up, but he figured it was nothing Dr. Bradford hadn't seen already anyway.
"How are you feeling this morning?"
"I'm okay," Jon said, deliberately using his male voice. "Though I'm a bit sore from yesterday. And I seem to be a little dizzy or something."
"Having trouble walking today?"
"Yeah, how did you..." Jon started, then trailed off. He continued in his girlish voice, having lost his concentration, "You made another change last night, didn't you?"
"Well, you mentioned that you hurt your ankle yesterday since you weren't used to wearing heels. We fixed that for you. You'll find that your feet and calves have been altered to be comfortable when wearing heels, and we also remapped your neural pathways to make you as skilled when wearing them as you were with flats before."
"Then why do I feel so wobbly right now?"
"Well, there's only so much we can add to your brain without risking damage. So we merely repurposed your existing motor control centers."
"Are you saying what I think you're saying?"
"I'm essentially saying that we replaced your ability to walk without heels, yes."
Jon sighed, and resumed putting on the costume. He stopped when he got to the boots.
"These look taller than they were yesterday."
"They are! We wanted to add more powerful thrusters, given that you blew out the ones you were wearing yesterday. But that required extending the heel of the boots. Since we remapped your neural pathways already, you will hardly notice a difference. Except you'll be a few inches taller," she said with a wink.
Jon finished putting on the costume and walked over to the mirror to see how he looked.