don't know why you feel 30 years old and hope it's not because of an abusive situation..
People have a hard time putting themselves in the shoes of these girls... It is hard. But if you've been abused all of your life, it's all you know, no one has been loyal to you in the family, no protection from harm... (some children are sound asleep when parents wake them to beat them or have sex with them), your (one's) perception of life and survival is so distorted in the sense that they do not go about solving problems the same way we do- they literally have no idea how to..
All they know is how to survive- get money for food, roof, and at worst, drugs to dull the pain of what they are doing to themselves (although it's "dull the pain of this awful world"- it's themselves and their memories that they can not fathom at all- Imagine how mind blowing it must be to have someone you trust violate you...For a child, there are no words, no way to reason this..So even if there is no memory or limited memory- the child has already learned that he/she is not worthy- and should be physically hurt and punished for this unworthiness.
Does this make any sense? Again, I do work with people who have been sexually molested at a young age but because of their defenses (schizophrenia) are not able to engage in insightful therapy and carry this burden throughout their lives.