One thing this doesn't discuss is how a sibling can traumatize a child and the child struggles quietly. Also, this fails to discuss how even as an adult this same sibling can be abusing and traumatizing them and it causes them to struggle and suffer as was the case when they were a child too.

This is something I have been dealing with myself and it's been SO TOXIC that it's been extremely triggering and my older sister is worse than ever and took money from my parents who recently passed and is choosing to blame what she took on me.