Fresh documents have shown that Lucy Letby had reported concerns about babies receiving poor care at the hospital she worked at
The former neo-natal nurse was convicted of murdering seven children and attempting to murder a further seven at Countess of Chester Hospital in a prosecution which has faced intense scrutiny.
Letby's new legal team have claimed in a new application to the Criminal Cases Review Commission that she was the victim of a miscarriage of justice.
**ARE YOU READING THIS ON OUR APP? DOWNLOAD NOW FOR THE BEST GB NEWS EXPERIENCE**
Her barrister, Mark McDonald, said his client was a "hard working nurse who loved her job".
Mr McDonald added that Letby would never harm a child.
"(That) is why she would not let any fault pass," he said.
"This was a neonatal unit in crisis and she consistently formally reported issues.
Lucy Letby | CHESTER STANDARD "She was a whistleblower - but instead of listening to her they went for her instead."
The barrister said his client was targeted for raising concerns and highlighted how an expert international panel found that no murders were committed.
Instead, they concluded that the babies collapsed or died due to poor care or natural causes.
Lawyers for the families of Letby's victims had previously criticised the panel's findings, claiming it was "full of analytical holes" and a "rehash" of the defence heard at the former nurse's trial.
Lucy Letby was found guilty of murdering seven babies
| REUTERSThe new documents which revealed Letby's complaints were first reported by The Mail on Sunday.
Known as Datix Admin and Management forms, they invovle multiple medical emergencies in the unit in 2015 and 2016.
The group that investigated Letby's complaints included Dr Stephen Brearey, one of the two doctors who would later raise questions about whether the former nurse was "purposely harming babies".
Letby had used the system to report an incident from the week earlier on June 30, 2016.
A baby had suffered a "sudden acute collapse requiring resuscitation".
However, staff dealing with the emergency found that the sodium bicarbonate infusion needed was unavailable.
Dr Brearey's group recommended new measures in order to make sure "adequate stock levels in future".
Letby raised a second report about another baby on the ward who collapsed three hours after the first incident.
She said that "resources were" unavailable to deal with the emergency.
The Mail reported that Dr Brearey amended the incident form to state that the medical resources mentioned were not necessary to deal with the incident and were usually not "routinely kept on the unit".
He conceded that due to a "recent increase in usage" a delivery would be arranged.
Another Letby report identified failures by doctors over administering intravenous medication.
The investigating group found nurses should check the equipment "on an hourly basis" and Dr Brearey would "update new doctors at induction".
At the request of Dr Brearey, Letby was removed from clinical duties the next month.
Letby's case is being considered by the Criminal Cases Review Commission - a report is expected to come back before Christmas.
Crown Prosecution Service recently received a new file by Cheshire Constabulary which is considering further charges in relation to incidents at Countess of Chester Hospital and Liverpool Women's Hospital.
A Countess of Chester Hospital NHS Foundation Trust spokesman said: ‘Due to the Thirlwall Inquiry and the ongoing police investigations, it would not be appropriate to comment further at this time.”