MIAMI GARDENS (CBSMiami) – Guadelupe Hernandez, 59, made her first court appearance Friday, one day after she allegedly fired shots into the air outside of her office.

Prosecutors told the court Hernandez had premeditated the attempted murder by bringing the gun to work.

The judge agreed and denied bond to Hernandez Friday morning.

Outside the courthouse, a member of Hernandez’s family told the gathered media to “stay the hell away from my family.”

Everything started Thursday morning when investigators said as soon as the boss arrived, Guadelupe allegedly began shooting.

“She was hysterical,” security guard Eddie Hernandez said of the business’ boss. “She was saying, ‘Lupe’s got a gun, she’s trying to shoot me. Lupe’s got a gun, she’s trying to shoot me.’”

Eddie said he immediately tried to get everyone else arriving at work out of harm’s way and that’s when he said he saw Lupe trying to reload.

“She was trying to click the gun back and she was trying to reload,” Hernandez said. “When she was inside the lobby, when she was trying to reload, the other gentleman in the lobby came up behind her, grabbed her hand with the gun and with the other hand was able to strip the gun away from her hand.”

The biggest question that remains unanswered from the shooting is what exactly led to the gunfire.

Lupe’s husband Raul Fernandez was shocked when he heard his wife of 24 years was under arrest. CBS4′s Ted Scouten asked him, “What happened today?”

“I don’t know,” he said. “For me, the only thing I can figure out is she lost her mind.”

Fernandez said his wife is diabetic. He wonders if a spike in blood sugar may have caused the violence. He said Lupe and her boss have had differences for a long time and just last night, Lupe was talking to a friend, afraid she was going to lose her job.

“She was crying talking on the phone,” he said. “She was saying she was afraid she’d fire her.”