Tiny Harmonies: Adaptability

This week's tiny harmony is a haiku riddle:

left at the crossroadsby science, she takes a rightand calls herself art
Who is she?  Or, more accurately, who was she before she renamed herself?  And how does she relate to the theme of "adaptability?"  The only hint I'll give right now is to say that sometimes good fortune

may come to you in a form that you may not expect

Apologies if I'm being overly obtuse.  In a day or two, I'll do a follow-up post with the answer and a mini-review of a very special piece of writing that inspired all this.  (If someone guesses correctly, I'll expedite the follow-up.)