OMAHA, Neb. -- A former Omaha nanny convicted of child abuse resulting in death will be staying in prison.

The Nebraska Supreme Court on Friday released an opinion denying Sarah Cullen's bid for post-conviction relief.

She was sentenced in 2014 to 70 years of life in prison after her conviction related to the 2013 death of four-month-old Cash Bell, who was an infant in her care.

Cullen has appealed her conviction multiple times. Her latest, claiming that she had ineffective assistance both at trial and through the appellate process, was denied by Douglas County Court last May.

The Supreme Court affirmed the lower court's decision on Friday.