Anna gets her memory back - Disney Frozen head canons <-- Except they were still there. The important parts anyway. It doesn't matter if she remembers what they were doing when they were playing, only that she knew that her big sister adored her.
Elsa Beskow was the illustrator that shaped my taste I think. The books my mother had loved as a child in Sweden were passed on to me and I poured over every detail and loved them too. --- I too Elsa Beskow.