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As you briefly validate what elements influence how much trauma will impact a child, experts claim that there is a strong link between symptoms of depression and anxiety disorders, for example, and how trauma affects a child, as asserted in this article:
Hyu Jung, H., Sun-Young, K., Jeong Jin, Y., & Jeong-Ho, C. (2014). Childhood trauma and adult interpersonal relationship problems in patients with depression and anxiety disorders. Annals Of General Psychiatry, 13(1), 1-23.
Experts also assert that there is a link between childhood self-esteem and interpersonal skills and support (or lack thereof), which impacts how trauma will affect, as reiterated by this source:
Brady, K. T., & Back, S. E. (2012). Childhood Trauma, Posttraumatic Stress Disorder, and Alcohol Dependence. Alcohol Research: Current Reviews, ...
400 words of references and notes briefly discuss the impact of trauma in children.