Little Miss Meta

Ruby Sparks opens today in limited release.  From what I can gather, it's about a young writer, played by Paul Dano, who creates a fictional young woman named Ruby Sparks, played by Zoe Kazan, who somehow comes to life.  It's directed by Jonathan Dayton and Valerie Faris, who did Little Miss Sunshine.

Dano and Kazan are together in real life, but it's hardly the first time a real couple played a couple in a romantic comedy.  And the plot of a writer's creation come to life has been done as well.

What struck me as odd, however, is the film is written by Kazan.  So she created this guy who creates this girl--played by her--who comes to life.  Can she do that?