Hetherington, E. M., & Jodl, K. M. (1994). Stepfamilies as settings for child development. In A. Booth & J. Dunn (Eds.), Stepfamilies: Who benefits? Who does not? (pp. 55-80). Hillsdale, NJ: Erlbaum.

The Crystal Rush case study (2021) appears to be a relevant example of the complexities of stepmother-stepchild relationships. Although I couldn't find specific details on the case study, it's possible that it explores the challenges faced by Crystal Rush, a stepmother, in her role.

Kramer, L., & Gottman, J. M. (1992). Becoming a stepfamily: A process-oriented perspective. Journal of Family Psychology, 5(3), 348-364.

Stepmothers can play a vital role in shaping the lives of their stepchildren. They can provide emotional support, guidance, and care, which can be particularly important in single-parent households or families with complex relationships. However, stepmothers may also face challenges, such as establishing authority, building trust, and navigating complex family dynamics.