content: with many tears she told him that he had guessed rightly when he supposed her not to belong to this world - that she had in truth come from the moon , and that her time on earth would soon be over . on the fifteenth day of that very month of august her friends from the moon would come to fetch her , and she would have to return . her parents were both there , but having spent a lifetime on the earth she had forgotten them , and also the moon - world to which she belonged . it made her weep , she said , to think of leaving her kind foster - parents , and the home where she had been happy for so long . when her attendants heard this they were very sad , and could not eat or drink for sadness at the thought that the princess was so soon to leave them . the emperor , as soon as the news was carried to him , sent messengers to the house to find out if the report were true or not .
answer: to think of leaving her kind foster - parents and the home where she had been happy for so long .
question: what made the princess sad ?
target: what made the princess sad ?
references: what made the princess sad ?