Lucinda Spiderwick (born 1929) is the Grace Children's aunt and Arthur Spiderwick's daughter. In the movie, when she was only 6 years old her father was taken by the Faeries and she didn't see him again until she was 86 and she returned to the age of 6 and left with him. She formely lived in the Spiderwick Estate and now lives in the Sanitorium. She's related to the Grace family and is apart of the Spiderwick Family.She is still living in the books but in the movies she goes to live with Arthur. One of her allies is Jared.