Human version of Teresa Brisby for my "Mrs. Brisby and the Bund of NIMH AU". Teresa Brisby is a firstborn and first daughter of Brisby Family. Inherited her mother's beauty, she is very mature and responsible for her pre-teen age. She occasionally learns to sew, cook, and read, often seen helping her mother or Auntie Shrew when it comes to chores.

Currently, when her mother Elizabeth goes out to look for help after Timothy went sick, Teresa spent most of her time checking on him. Additionally, she helps Jeremy untied from his clumsiness and making sure her brother Martin or their little sister Cynthia is out of trouble. The most observant, she also sees Justin developing romantic attraction towards her mother and doesn't mind having new father.