In A Wrinkle in Time, Meg Murry experiences significant personal growth. Initially, she struggles with self-doubt, feeling inadequate compared to her family and peers. Through her journey, she learns to accept her faults as strengths, recognizing the power of love and uniqueness. Her relationship with Calvin, marked by mutual support, helps her realize her capacity for love. Meg's journey teaches her to harness her emotions positively, ultimately empowering her to rescue her brother and embrace her individuality.

Meg must go alone to Camazotz because she is the closest to Charles Wallace, understanding him more deeply than anyone else, which is crucial for his rescue. Her relationship with him, based on mutual understanding and love, enables her to break IT's hold over him. This journey is also pivotal for Meg's personal growth, as she learns to rely on her own strength and the power of love, which ultimately liberates Charles Wallace.

After escaping IT, Meg feels intense anger towards her father and Calvin for not sharing her urgency to rescue Charles Wallace from Camazotz. She is particularly upset with her father for leaving Charles behind. This anger is partly due to the lingering evil effects from Camazotz and her realization that her father is not the perfect, all-powerful figure she once believed. Although her feelings are understandable, they are portrayed as unfair since her father and Calvin also want to help Charles.