It's a tiefling!
Her name was Giosha, also known as Madgirl in the Attic, and she lived a Bohemian life, tenderly cared by an adoptive mother.
Night sky fascinated Giosha and, as an artist, she made fine star maps with fancy illustrations that represented constellations. Her ambition was to illustrate "the perfect star".
Something up there was impressed and became her patron. The rest is destiny.
(And as an introverted, solitary and very self-conscious tiefling she just LOVES the attention...)
Tools: Mouse, Paint Shop Pro