Was Rosemary brave in The Giver?

In Lois Lowry's novel "The Giver," Rosemary is depicted as a character who initially appears brave but ultimately succumbs to the weight of the memories she receives. While she demonstrates courage by volunteering to become the Receiver-in-Training, her inability to cope with the painful memories leads her to request release, indicating a lack of true bravery in the face of adversity. Rosemary's story serves as a cautionary tale about the consequences of taking on challenges without fully understanding the implications.