Well, if the school you wrote about has been that meaningful to you, and you were already accepted there (as well as Penn State), then it seems to me you have a good outcome already in the bag and even the worst case (that all other Common App schools turn you down) won’t be the end of the world.
As you now realize, it would have been better to tell the story without naming the school (except perhaps when applying to that school!)… but hopefully it comes across that your story is more about the experience and what it taught you than about the specific school.
You can, of course, revise the essay for additional schools you haven’t submitted to yet. For the ones you’ve already applied to, all you can really do is hope for the best, and know that you already have two terrific options, including the school that made such a significant impression on you.