Unfortunitly, I have delt with abused children and their parents before. The mother is trying to seek a "quiet" solution that does not exist. She has to get the girl to a professional CHRISTIAN counsler. It is great that she confided in you but you are not a thearpist. The help she needs will not be found in a book. I know she wants to sheild her daughter but the damage is done and the child needs professional help and honestly so does the mother. Things will only get worse if they do not. Talk to your Pastor about one in the area or call the hotline given in a previous post.
Sorry, there is no simple answer to such a terrible question. I wish there were.
I know how difficult this is for you. I have delt with countless abused children and their families. Pray. And the best advice I can give you is this, if you find it affecting your emotional well being to the point it is taking away from your own family (mainly children) you will have to back off for your own family's sake.
Entering my 14th year in AWANA
A Citation Winner because I felt I had no right to tell my kids to do something I would not do myself, so I started doing the 3rd grade books and just kept going.
Are you doing your sections along with your clubbers?