Hi, my sister and I are adopted. I have no interest in finding my birth parents but she wants to. My dad confided in me when he was upset about it that hers are not good people and have a history of child s*x abuse. Is there any way to prepare her for this? My sister would be more vulnerable than me and I am just so worried that this will be too much for her and she will not be able to cope. Any advice would be much welcomed