HER CHEEKY smile hides a heartbreaking story.

For little Niamh Walker desperately needs a new heart.

The 15-month-old toddler from Fenay Bridge is the youngest girl in the country to appear on the heart transplant list.

She has already waited more than 330 days.

But with each day that passes, her little body and her parents – cling to the hope that a suitable donor will soon be found.