When Daniel called Celia "Mommy," she didn't make a big deal out of it. She didn't want to argue over a kid's choice of name.

But before Daniel could reach Celia, Grace grabbed his tiny hand like her life depended on it. "Daniel, why are you going over to her? I'm your mother!" She huffed.

"Are you sure?" Celia smirked.

Tammy chimed in with laughter. "Yeah. Seriously?"

Under Celia and Tammy's watchful eyes, Grace's poker face cracked for a brief moment, revealing a ...