After spending days in critical condition, Brenda Cooper, 66, succumbed to injuries she sustained on July 16, officials said.

Elderly residents – some in wheelchairs and some dependent on oxygen tanks – were blinded by deadly smoke as they tried to escape an assisted-living facility in Fall River, Massachusetts, which caught fire Sunday evening.

Assisted living centers are rare in Mass, but many families still don’t know what they offer — or what they don’t.