I think that is a good idea and I also think "cognitive distortions" can be used wrong and you are right, a person can have a perspective on something that is really not a distortion but "that person's" reality that they themselves may find unbelievable but true.

Yes, one of the symptoms of PTSD is shame and guilt and anger at one's sense of need and helplessness when experiencing a trigger that turns into a cycle. It is VERY important to learn "not" to feed into the negative feelings that can present with a cycle too. It is also important to think about one's dysfunctional parent/parents/family members that interact in a way that discards emotions or sharing emotions or even the right to have one's individual choices/tastes/hobbies/desires to do different things for one's self. Understand daily that just because there has been dysfunction and lack of support from family that it never means one is truly unworthy in any way.