Given the question: Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: What is Sara left with at school? Title: A Little Princess Movie plot: Sara Crewe (Liesel Matthews) is the kind, caring daughter of Captain Crewe (Liam Cunningham), a wealthy aristocrat living in India. Sara's mother died when she was very young, and she has to leave her beloved childhood home and friends when her father volunteers to fight for the British as an officer in World War I. He enrolls her at a girls' boarding school in New York, and instructs the headmistress Miss Minchin (Eleanor Bron) to spare no expense making sure his daughter will be comfortable while he is away. He has reserved her the school's largest suite, and gives Sara a specially-made French doll named Emily telling her that if she wants to talk to him, just speak to Emily and he will hear it. Though she finds the strict rules and Miss Minchin's harsh attitude stifling, Sara becomes popular among the girls, including the scullery maid Becky (Vanessa Lee Chester), for her kindness and strong sense of imagination. She writes constant letters to her father, which are a great source of happiness for him on the battlefields of Europe. Due to a body being misidentified, Captain Crewe is declared dead when he is actually seriously injured and suffering from amnesia, and the British government seizes his company and assets. When Miss Minchin hears the news, she is in the middle of throwing a lavish party for Sara, hoping to extort more money from her father. When Crewe's solicitor arrives and tells her there will be no more money, Miss Minchin is furious. Since Sara is now penniless and has no known relatives, Miss Minchin decides to move her into the attic with Becky to work as a servant where she will report to Mabel (Peggy Miley) at 5:00 AM. Meanwhile, the elderly neighbor Charles Randolph (Arthur Malet) has received word that his son John, also fighting in Europe, is missing in action. He is asked to identify a soldier suffering from amnesia, but he is discouraged to discover it is not John. His Indian assistant Ram Dass (Errol Sitahal) encourages him to take in the man anyway, reminding him that he may know...
The answer is:
Because her father has to join the Boer war.