I would like to say that as an abuse survivor and now an educator, I know that sexual abuse does not happen in a vacuum. If your wife and her family did not have access to tv, computers, the outside world, her older sisters had to have exposure to sex acts by someone, possibly their mother, father or another close relative. I would be very surprised if at least one or both of her parents(as well as other family members) either suspected or knew what was going on. Your wife may have complex PTSD, among other things, but I am not a doctor or a therapist and it may be a good idea for her to see both, if she is able. Sexual abuse is very difficult to talk about and it can bring up a great deal of shame, pain. and fear. I am so very sorry this happened to her. She is in a lifelong journey of healing and you are in a position to offer her support. You may also want to speak with a therapist if you are able to. I am glad you wrote in. I met my current therapist back in 1996 when she led the support group I was in. She eventually became my individual therapist and I saw her once a week. During the hardest part of my recovery work, I saw her 3x a week(for about 3 years) and now I go 2x. Eventually I will only go once a week but it is a big time/money commitment as well as emotionally intense at times. My therapist always tells me that although the work is painful, the actual abuse is over and I am the adult now. Your wife will need you, if you think you are able to be there for her(I cannot imagine how difficult this must be for both of you, especially your wife) by listening and allowing her to share what she is able to share, then you are off to a good start. My own therapist is a survivor and I know there are many other wonderful therapists(can you find one who specializes in trauma?) out there. We are here to listen and help, if we can.