At around 8 a.m., police say, a man struck the 61-year-old woman in the head with a large rock. She was taken to a hospital after sustaining injuries to her face and head, the spokesperson said.
The NYPD arrested a 33-year-old man Saturday in connection with the crime and has recommended charges of assault and harassment against him.
She had to have surgery to relieve pressure on her brain, Hsieh told CNN.
“She’s not only a tenant, she is just like my family. I treat her like my auntie, because my mom just passed away,” he said.
“I can barely fall asleep or eat well. I feel just like my family was hurt,” Hsieh said.
Hsieh said he didn’t have confidence in New York security.
The man arrested in the Friday incident was still in custody as of early Sunday afternoon, according to the NYPD.
“It’s better than if he was not arrested,” Hsieh said, but he added he and the woman’s husband are mostly concerned about Ma’s recovery.
CNN’s Artemis Moshtaghian contributed to this report.