Missing Girl, Madeleine McCann; Map Leading to Possible Burial Site?

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Today, we have learned that an anonymous tip was sent to a newspaper which offered information regarding where Madeleine McCann's body may be located. A year ago, the same newspaper received a map whereby it actually led authorities to the bodies of two, young Belgium sisters. I agree that authorities could have conducted their investigation of her disappearance in a more thorough manner. However, when are the parents going to be held responsible for leaving her alone, at age four, with her two-year-old siblings while they dined with friends at a restaurant nearby?! It is understandable that people are reluctant to do so as the parents are suffering with the disappearance of Madeleine. However, it is the parents' job to provide a safe, and loving environment for the well-being of their children. Is this not a case of gross neglect?!