I put down she does not like football as an answer and it was rejected. I'm from the UK and we don't generally refer to football as soccer which is more an American thing. Details like this make duolingo highly frustrating at times especially as the word football was accepted in a previous answer.
After you send your answer and get it wrong, a green button will appear down the page stating "Report a problem". There are many options there, including your own space to notify any other odd thing you may find! This way, the team gets your suggestion and soon you'll receive an email letting you know the solution you submitted was accepted! =)