75-year-old woman dies after being attack by dog she adopted

Authorities say a 75-year-old New York City woman has died and her autistic son has been injured after they were attacked by a dog she had recently adopted.
WABC (https://bsmedia.business-standard.com7ny.Tv/2kCHNI5 ) says the woman had planned to return the dog, a mastiff, to a shelter today because of its aggressive tendencies.
The TV station reported that the woman and her 39-year-old son were attacked after midnight today in Queens. Police say Louise Hermida was pronounced dead at a hospital.
An autopsy will be done to determine the cause of death. Her son was in stable condition with a leg injury.