I believe I used to watch it around eight years ago, or so.
It's animated, but not really old. It involves a little girl being really ill around Christmas time, and she has a brother. I'm not sure if he's older or younger though. And I remember one scene where she's eating soup..
I think she and her brother go on a trip somewhere to a really big place like a castle.. or it might be in the story being read to her. She has both parents living with her.. And she has short blonde hair. That's all I can really remember. All the rest of it is in my head. If you have any idea what this movie is, please let me know. Thanks. :)
If you can pull up any more details, that might help. There's the animated 1968 movie "The Night Before Christmas" where Clement C. Moore's daughter gets pneumonia and asks for a Santa Claus story. He then writes the "Twas the Night Before Christmas" poem. It's on YouTube so you can check to see if that's it easily enough.