It's well into the evening by the time Elsa's fully dilated. Her contractions have been growing steadily stronger, and Anna's already had to swap hands twice. She's also got a cool cloth to wipe away the sweat on Elsa's forehead.

"Elsa, it's almost time to push," the midwife says. "You're doing really well so far. Just a little more to go."

Elsa opens her eyes, seeking out Anna. Anna smiles.

"You're doing amazing, Elsa," she says. Elsa doesn't smile back. She does something better.

She pulls Anna down and kisses her.