A Friend From HS Really Surprised Me

I went to a 15-year HS Reunion. Because I'd spent almost all that time out of the country, I didn't recognize a lot of my classmates right away.
There was this fairly attractive woman, I'd have called her a girl as she looked so young I naturally assumed that she was here with someone from our class. She was quite by herself and didn't have a name tag on either, we exchanged glances, and she smiled at me and sashayed over to me. The first thing out of her mouth was that I had not changed much. Damn, I was feeling silly as I had no idea who this was, and she could see that and the fact that it made me feel uncomfortable.
That seemed to amuse her, and she looked me in the eyes and said you do not know who I am, do you ? I stuttered but nothing came out, it seemed to amuse her more and she said that she must not have made an impression on me as we had hung out a lot in the day. Now I am totally confused as I didn't hang out with girls or have girlfriends as I was rather shy and backwards and focused all my energy on baseball.
She said don't worry no one has recognized me, I thought that you would have as you always stood up for me back then. Now I used to stand up for my neighbor Speros as he ballboy score keeper for the team. I know that she saw the look of disbelief on my face, I could go on, but we ended up back in my motel room. I wasn't thinking that I'd end up sleeping with her, but I did.
She had this great breasts that she told me were natural, a womanly hourglass figure and her ass was so feminine round.
she told me right after she graduated, she had an Orchiectomy, and her mother had had her on hormones therapy and once her balls were gone everything sort of fell in place.