An investigation was carried out following the deaths which found more could have been done to offer emotional support to Mrs Nunn after her terminal cancer diagnosis.
The Domestic Homicide Review (DHR) said it could only be assumed she felt there was no other option or alternative for her son's ongoing care relating to his Cerebral Palsy and epilepsy, TeesideLive reported.
A “loving” mum killed her disabled son and herself on the anniversary of the death of her husband - just days after being told she had terminal cancer.
Shirley Nunn, 67, was the appointed carer for her 50-year-old son Stephen, who suffered a serious brain injury which changed his life when he was 11.
Mrs Nunn's husband Paul had died of cancer in October 2019 and his loved ones passed away on the anniversary of his death.
