What did Melinda steal in the book Speak by Laurie Anderson?

You are likely thinking of the book Speak by Laurie Halse Anderson, not Laurie Anderson (who is a musician).

Melinda Sordino, the protagonist of Speak, does not steal anything in the book.

The novel focuses on Melinda's struggle to cope with the trauma of being sexually assaulted at a party. She becomes withdrawn and isolated, making it difficult for others to understand what she is going through.

The book explores themes of silence, shame, and the challenges of finding one's voice.