That's not always true scaredkat. With the case I know of the oldest daughter left the other two daughters behind. For some reason she didn't think anyone else would be abused. Sometimes the abuser tells the abused that they are "special" and the older daughter wouldn't think the younger ones will be abused. We are talking about children here and depending on how the abuser approaches the child with "love" or with "violence" makes a big difference in how the child reacts.