Has Mother received a spoon is the alternative answer. That should be the main answer because when the question is reversed, "Have you received a spoon" does not mention mother so there is no clue as to the correct answer. If you use the keyboard to write the answer instead of the word list then there is no clue in the question to give you the correct answers.
in the question where you have the word list to choose from then the only word than can match "you" is mother. True if you were talking to your mother then you could address her as "you" but I don't think that makes it a valid translation for mother. In Duolingo they double the number of available questions by reversing the answers and questions. In the reversed question there is no word bank so there is no way to know that mother should be translated as you.
Having said all that I think having bad translations in the questions is not all bad. It is frustrating and extremely annoying at times but it does make us think about the correct translation and maybe help us to understand it better. Maybe, not 100% convinced but maybe.