Christmas is subdued.
Anna's been sleeping in her own bed again.
What a horrible fucking Christmas present.
Elsa knows this, feels terrible because she can see how much Anna's struggling with everything, too. The babies were theirs, after all. But, Elsa can't. There's something within her, still too raw, too hurt. The baby is still within her – it would do more harm than good to remove it – and Elsa realises that she doesn't want this pregnancy to end.
It's the last chance she'll ever get to spend with this child. Her only chance.