What an amazing story. After reading your piece, I discovered that 5-MEO-DMT is actually known as "the toad." Now I know why.
Incidentally, according to Forbes, Mike Tyson took the stuff and said the first time felt like dying and being reborn. Your own story seems to corroborate this.
It makes me wonder about the fairy tale, too. Maybe the frog turning into a prince was all in the eye of the beholder. I'm convinced fairy tales are basically hidden messages anyway. So maybe that old story was trying to tell us something your 5-year-old self discovered on her own.