When Dorothy Maitland's daughter Kaelen died at just nine days old she was told there would be no ashes to scatter or bury at her funeral.
Twenty six years later she has been shown where her daughter was buried in a mass grave.
She told ITV Daybreak: "You trust these people, and you think you're being told the truth".
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."