Eileen Rock was staying at the council-run Cherry Trees home in Nottingham - and it has emerged staff at the home had stroke awareness training just weeks before it happened.
Campaigns say with a stroke the quicker you act, the more of the person you save.
They talk of minutes - for Eileen Rock she waited hours for help, in a home surrounded by staff that were supposed to be caring for her.
Five hours she waited before an ambulance was called at the Cherry Trees home.
It has left her unable to walk and made previous speech difficulties even worse.
She now lives with her daughter who was horrified to find an ambulance had not been called when she arrived at the home.
Anita Rock said:
Anita complained about the incident - an investigation by the Local Government Ombudsman found that the home's manager and a deputy manager were aware of her mother's situation - but both thought the other had phoned an ambulance.
Elaine Yardley from Nottingham City Council said:
The report highlighted that staff at the home had recently received stroke awareness training, and that the home's neglect to call the ambulance compromised Eileen's dignity.
More importantly earlier action could've reduced the severity of her condition - and those who were caring for her should have known that speed was of the essence.