Missing Mary Boyle's twin says it's time to bring her 'torture' to an end 

The then six-year-old vanished while walking through a field at her grandparent’s house in Ballyshannon, Co. Donegal on March 18th, 1977.

As the 45th anniversary of her heart-breaking disappearance approaches, her twin sister Ann Doherty appealed for information on the case.

“It’s time to bring this torture to an end,” she told Midlands 103.

“Please come forward with what [you] know.”

“It could be what we need just the last little bit to get Mary’s body found and to give her a proper, decent, Christian burial which is the very least she deserves.”

“She deserves to be in a proper grave,” Ann added.

Mary, who is Ireland’s longest missing child in modern Ireland, would be 51 if she is still alive today.

Ann has previously stated that she believes that Mary was being abused and was killed after threatening to tell on her abuser.

Speaking to Sunday World, Ann and Mary’s mother, also called Ann, said that she hopes her daughter is found before she dies.

"I still think of her as the special little girl I remember but I do wonder too what she would be like now and where in her life she would be.

"My husband Charlie died 15 years ago not knowing where Mary is. Her disappearance took a toll on his health and on all of us, and I still hope she will be found before I die."