Pippa Took

Patricia "Pippa" Took is one of the two titular characters and female protagonist of The Shieldmaiden and the White Wizard.

Backstory
Pippa's backstory is the same as her male counterpart of Pippin Took. She is the Thain's daughter and has three unnamed older sisters, presumably named Pearl, Pimpernel and Pervinca.

The Shieldmaiden and the White Wizard
The Shieldmaiden and the White Wizard focused on the relationship between Gandalf and Pippa during the final days of the War of the Ring.

Pippa later looks into the Palantír but unintentionally uses it. During her trance, Sauron attacked her mind, while also torturing her. Pippa resisted every urge, also refusing to tell him about the Ring or Frodo. She also sees the White Tree in the court yard of Minas Tirith. However, Pippa could not resist answering that she was a Hobbit.

Gandalf realized that Pippa would be in danger because she answered what race she was and decided to take her to Minas Tirith with him to protect her better there.