Mother Ami Dean was taken to Stafford Hospital on 30th October 2010.
The twins she gave birth to were 13 weeks premature.
After their condition deteriorated, they were transferred to University Hospital of North Staffordshire but died on November 1st.
More top news
A pensioner who made neighbours' lives a misery, including displaying images of Miss Piggy to torment an overweight woman, has been jailed.
A newly promoted police officer caused a sensation with local women on Facebook
Headteachers could strike in protest at government plans to force schools to become academies