My family member doesn't have them neither. The abuser has admitted that he molested this person too but the person was shocked and said that it's ridiculous (why would the abuser lie in such situation?). After some time in therapy the family member has realized how many symptoms of csa they have and everything falls into place; however, still there is no single memory... Thus, the fact that you don't remember, doesn't necessarily mean that nothing has happen (unfortunately)