I search for a movie but I don't remember too much. It was about a girl (who was like 10 years old) and maybe she has a sister but that's not sure and her mother has a serious illnes (maybe tubercolosis) and she was in a sanatorium. And the girl (and maybe her sister) and her father lived in a house but they moved out of the house.
Thank you for reading and sorry if I write something wrong, English is not my native language. :)