How do we know that lizabeth is on the verge of becoming an adult?

Lizabeth's transition toward adulthood is evident in her emotional turmoil and growing self-awareness. Her impulsive actions, such as destroying Miss Lottie’s marigolds, reflect a profound inner conflict and a loss of childhood innocence. Additionally, her reflections on her experiences and her ability to empathize with others signal her maturation. These moments highlight her struggle to reconcile her childhood with the complexities of adult emotions and responsibilities.