Lauren Coyle, 19, of Collins Road, Bamber Bridge, Preston and Reece Hitchcott, 20, of The Fieldings, Fulwood, Preston. were sentenced to 10 years detention at a young offenders institution.
Ellie-May's father stood quietly during the statement, wearing a top displaying the words 'Justice for my daughter Ellie-May'.
The statement read by Ellie-May's grandmother, Sharon Minshull, said: "Ellie-May was a beautiful little girl, she was so special to everyone around her.
"She was always happy and the best daughter in the world.
"She was the perfect daughter, and perfect granddaughter, and will always be in our hearts and minds.
Sharon Minshull went on to thank Mr Terani and the police and for all the support the family had received.