if i might just make two points perfectly clear:
often there are families or sub-cultures of sexual abuse. witnessing it, or coming into contact with some other child who has either witnessed it or had it done to them, can be like contamination of ideology and behavior.
the appropriate response in an adult who has recovered or finally faced memories of sexually maladaptive (wrong) behavior is 1) Horror, or 2) Anger, or 3) Grief.
guilt is not an appropriate response.
i do believe this is an empowering and healing perspective on this issue.
may you have healing, and the causes of healing~!