Incest Survivors Support Group
Incest refers to any sexual activity between closely related persons that is illegal or socially taboo. Consensual adult incest is very rare. Incest between adults and prepubescent or adolescent children is a form of child sexual abuse that has been shown to be one of the most extreme forms of childhood trauma. If you or a loved one is a survivor of incest, join the group...
The only person ultimately responsible here is your grandfather. He had the power to make sure neither of you were abused by simply not doing it.
What happened to you and your cousin is not your fault.
The last time he was around us he had his new wife and a total of 5 kids. I could tell they were terrified of him, in retrospect.
I find it very sad...but I think had I remembered then, nobody would have believed me.