Based from an idea that Elsa is going to be so excited for Anna's pregnancy.
She'll be incredibly protective of Anna during it, going as far as having her room moved to the first floor because, 'there's no way Anna will be walking up the stairs....it's too dangerous.'
Anna's cravings gross Elsa out, but Anna gets upset if her sister doesn't try her new recipes.
"Anna. Mixing sauerkraut, smoked salmon, egg, and chocloate syrup goes against the unwritten laws of nature. Absolutely not." Elsa clenches her jaw to prevent cringing at the sentence she never expected to escape her mouth.
Anna puts her fork down, and her sister relaxed slightly. "Elsa do you love me?" Elsa looked up from her tea in disbelief, caught by her little sister's famous pout.
"Of course Anna, don't be ridiculous."
Anna smirked, knowing she had Elsa trapped. "Then try it."
"Fine. Give me your fork...I'm not contaminating mine." The tiniest sample was stabbed with her fork held out with an excited grin, and taken by a nervous hand. "Dear Valhalla." Elsa gagged and let out a shaky breath.
The princess rolled her eyes, "Quit being so dramatic Elsa."
Elsa's eyes widened in offense as she held the fork over an empty plate. "Me? Dramatic?"
"Very dramatic." Confirmed the strawberry-blonde.
"I am n-" Elsa gagged again as she looked at the food on the fork. "Ah! It's moving Anna."
Anna laughed at the new form of entertainment. "That's your hand shaking. Just try it, Els. Pleaseeee?"
Elsa spends the next twenty minutes retching in the bathroom, all because she loved her sister.