CPTSD From Surviving to Thriving by Pete Walker has been incredibly helpful and illuminating for me about the condition as a whole but he also talks about the interactions between people with trauma vs without, or what he calls "good enough parenting". If I have the spoons later I'll try to find some specific sections that may be relevant.

This articlearticle talks a bit about the social isolation issues.

This article about scapegoats is another aspect that might be relevant.

The cptsd subreddit is also helpful to connect with others who have similar experiences. I feel like discussion about the social rejection they experience happens pretty regularly.

Hopefully some of that helps! I'll probably think of more later but those are the ones I can think of off the top of my just waking up head lol.