Translation:Min tante er en moderne kvinde.
This is wrong. As I understand it 'aunt' means both "mother's sister" and "wife of uncle". In Danish we have two different words for those meanings. "Moster" is my mother's sister and "tante" is my uncle's wife. So both words should be accepted here. I have reported it, but if you run into the same problem, feel free to do it too :-)