I think people should have psychological test before they have children.
Something quite similar to this happened in south eastern VA. The article can be found in it's entirety at this link.
http://www.msnbc.msn.com/id/18832792/
Mother Prostitutes 10 Year Old Daughter For Drugs
According to police, 57-year-old Joe Slade sells crack cocaine and takes more than cash in exchange.Investigators said that last weekend a 36-year-old woman brought her 10-year-old daughter to a Hampton hotel to get drugs from Slade. For payment, police said, the woman allowed Slade to have sex with her underage daughter.
The mother is not being identified because that would identify the daughter as well.
Police found out what had happened when another relative took the little girl into the hospital to be treated.