The image of the girl you created was definitely a heart-wrenching one.
I read this story a few days ago when you first posted it and while I liked the concept, I had a little problem with the technical aspect of the story. I felt uncomfortable voicing my concerns, because I didn't want to sound unconstructive.
The problem I had was with the 'giving his shirt' to the girl. While I liked the sentiment, Superman doesn't wear a 'shirt' per se. He wears a one piece "suit". So, it made no sense to me how he could hand to her the shirt off his back -- unless it was his 'Clark' shirt. And as I knew Superman was flying into the alley to change, I was then confused as to when during the process he had discovered the girl. Was she in the same alley or in an alley across the street? Had he done the spin before noticing the girl? Who was in the alley with the girl: Clark or Superman?
Until he told her he was Superman. And then I thought, Is Clark revealing his secret identity to this girl to get her to trust him? Or he is explaining why under his Clark shirt he has the Superman suit on? And I thought how selfless Clark was being, knowing that the girl's need for assistance / reassurance was greater than his own need for privacy / secrecy.
And then on second reading, I realized it was "Superman" giving her the top of his uniform to her and wondered how could he give her his "shirt" when he doesn't wear a shirt and why didn't he give her his cape? (Which at the beginning of the show was part of the suit and not the harness configuration of the photo provided -- which was later development. If you look at the photo closely, you will see the top of the 'suit' hanging around Dean's hips.)
I'm sorry, if my concerns about your story aren't positive, Lynn. May I make a suggestion in hope of redeeming myself?
If you are considering a rewrite, may I suggest adding a line in about how he and his mom were working on different styles of the suit, one of which was a two part suit - with a top and bottom. A suit style that Clark didn't like (and possibly is grumbling to himself about at the beginning of the story... 'harder to do the spin with a two part suit'...), but in the end he was glad to have it so he could give the girl the shirt off his back. Anyway, that's my suggestion. You don't have to change your story to meet my concerns, just thought I'd voice them. Now I'll crawl back into that hole I came out of.