The Italian restaurant, which was bombarded with criticism after word spread that they were holding the fundraiser, plans to donate the dinner proceeds to Nowak's family.
Restaurant co-owner Tony Bless told Melbourne's Florida Today he thought it was the right thing to do for Nowak, who made a positive impression on his staff when she dined there last summer.
"We stand by our friends in time of need, and it's a time of need," he said.
• PHOTO ESSAY: Astronaut Love Triangle
Bless says he's also gotten supportive calls and e-mails from as far away as Italy.
Nowak was arrested Feb. 5 on charges of attempted murder, attempted kidnapping and three other crimes stemming from what police described as a love triangle involving fellow astronaut William Oefelein. She was released on bail and ordered to stay away from the other woman and to wear a monitoring device.