Darent Valley Hospital is to be sued after twice telling a stroke sufferer she needed psychiatric help.
She collapsed in the car park of the hospital when her family took her back to the A&E department again in the middle of the night.
Three days later Margaret Maddox died.
Paperwork was missing from her files, and her medical notes were incomplete.
The hospital has strenuous denied any negligence.
But according to reports today, her husband, ex-prison governor Phillip Maddox has decided to take the hospital to the High Court after a coroner ruled last month she died from natural causes.
Mr Maddox, of Brandon Road, Dartford, told the coroner, Roger Hatch, at an inquest in Gravesend his wife had repeatedly had severe head pains, and insisted she was ill.
Last week it was revealed another family had been compensated and major changes made to nursing at the hospital.
It followed the death of a 74-year-old man with bed sores, MRSA, gangrene and pneumonia which Mr Hatch ruled was caused by the hospital’s neglect.
A hospital spokesman said: "After a thorough investigation into the facts and hearing the statements and evidence from all parties, the coroner concluded that the care and treatment Mrs Maddox received at the hospital had been entirely appropriate and that she died of natural causes.
"We are completely satisfied that our doctors treated Mrs Maddox properly and that all of the necessary tests and investigations were performed. We offer our sincere condolences to the family and understand how difficult and distressing it can be to lose a loved one."