She is a agent of The Seven Roses.She was sent to Dublin,Ireland to research The Land of Erin.Soon,she went missing!Thea Stilton and Thea Sisters were sent on a mission by a Seven Roses agent to find Nina.Soon,they found out that she was imprisioned by Red Caps in The Court of the Discontented.Soon,she is recused.Before she was recused,the only clue was her diary.

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