When mum Jenny Huddart and dad Adam Walker noticed a bruise on their baby's eyelid they put it down to her moving around more. She must've hit herself while playing with a toy they thought.
But the bruise continued to grow, eventually pushing her eye out of shape. It was then that they knew something was wrong and took her to the doctors.
Shortly after Easter, the family was told Harper has a rare form of cancer known as Neuroblastoma, a condition that affects around only 100 children per year. Mum Jenny told the Manchester Evening News: "Harper was born with hip dysplasia and was in a cast until last December and started moving more after that.