How is it obvious?

Looking at this post alone, I see no mention that the work she did was just alterations of an original. She even says "New Art!" which would have me thinking even more that this is a brand new piece of work created from scratch.

You have to look at each individual post individually. This is the first post I've discovered of this person, and if I was just browsing through STEEM and stumbled upon her work I would assume she was the artist of the entire work.