Lorna Gable, 84, was pronounced dead at 7:06 a.m. at Loma Linda University Medical Center, San Bernardino County coroner's officials said.
Gable's death makes the second elderly woman killed in a San Bernardino home-invasion robbery in two months, and the fourth in eight years.
"It's been really hard," said her daughter, Sandy Gable. "You're just living day to day trying to see if she's going to make it."
Despite her grief, Lorna Gable said she was also relieved because she believes her mother is no longer suffering.
"It's a relief that she's hopefully in a better place," she said.
Lorna Gable called sheriff's deputies at 4:24 a.m. Jan. 19, saying there was a man in her house in the 900 block of West 40th Street.
The intruder confronted Gable, beating her with a Maglite. He also attacked Gable's husband, William, before stealing money and valuables.
He fled before deputies arrived.
Gable's death follows several others that are the focus of $30,000 in rewards offered by the San Bernardino Police Department in January.
Wanda Lee Paulin, 86, Mary Beth Blaskey, 76, and Josephine Frances Kelley, 90, were killed in home-invasion robberies between 2005 and 2012.
Police have said they don't suspect the same person committed all three crimes.
Sandy Gable said her father is numb from the loss.
She hopes an arrest is eventually made.
"I hope that they catch the guy and they throw the book at him," she said.
Reach Melissa via email or call her at 909-386-3878.