Lyndsey Shipstone has donated Mary’s organs to help save the lives of other children.
It is believed the little girl’s organs have saved five other children, including two babies.
Ms Shipstone said: “It was important to allow Mary to make that gift of her organs because she was such a healthy girl.
“I thought it would be a way of Mary living on in these children in some small way.”
Comments left on the fund raising website described Mary as an angel and another star in the sky.