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. momcomesfirst210319crystalrushstepmomss 2021
The Impact of Stepmothers on Family Dynamics: A Review of the Crystal Rush Case Study (2021) The Crystal Rush case study (2021) appears to
The impact of stepmothers on stepchildren can be significant. Research has shown that stepchildren who have a positive relationship with their stepmother tend to have better emotional well-being, academic performance, and social relationships (Kramer & Gottman, 1992). Conversely, stepchildren who experience conflict or rejection from their stepmother may experience negative outcomes, such as decreased self-esteem and increased behavioral problems. Journal of Family Psychology, 5(3), 348-364