After looking these pics over I'd have to say that in the original post you made the hatchling is not the same snake as the adult. The hatchling has 18-19 triads while the adult has 16. In this last photo, yes, they're the same snake. Basically, of the two hatchling snakes you've shown, they're of two different animals.

Mitch

Btw, the end result is a screamer of an adult though!!!