Thanks to Laini (of Sunday Scribblings fame) for naming the feeling I've had while writing recently: Snick. She defines it as the sound of puzzle pieces fitting together, and broadened it to encompass the feeling you get when you finally, finally know that something you've been working really hard on is moving in the right direction.
I finally feel like I've got to the heart of a story I first drafted over a year ago. How do I know? I can finally answer the deepest question a writer can ask of her work with confidence: What is the story about? Well, Sit, Stay is about two lonely women who find friendship with each other for a short period of time before they come to a small conflict that they cannot overcome because they are both hurting from recent losses and can't risk getting hurt again.
Ta dah! Now in my next revision, I can make sure the themes of loneliness and fear are present and clear throughout the story.