It was released around Christmas and within months, she was met with questions about her book.
"I just kind of brushed it off, and didn't think twice about it, until I started getting calls, emails, Facebook messages, people I haven't heard from in 30 years, asking me, 'You wrote this book?'" she explained.
Jacoby-Hale's book draws upon her own years teaching at-risk students at a New York City public high school.
Her main character, Olivia Dalton, not only struggles with the challenge of reaching her students, but also trying to start a family of her own with her husband. The author said the confusion over the title has been more of an opportunity than an obstacle.
"It gives me a chance to get my book, and my issues out there," Jacoby-Hale said.
Among the crowds who showed up to the Falafel Bistro in Coral Springs for Jacoby-Hale's booksigning was teacher Karen Daum, who said the book struck a nerve.
"I think it deals with a lot of things that are happening now, in the real world, and happening on the news, and what's just going on currently in the education system," Daum said.
Jacoby-Hale's friend Sandy Listoken was so eager to read "Shades of Gray," she downloaded it, but was met with a salacious surprise.
"I actually downloaded "Fifty Shades of Grey" first, so I started reading it, and I went, 'This isn't the Susanne I know and love,'" Listoken said.
"Shades of Gray" and "Fifty Shades of Grey" could not be any more different. The latter focuses on the racy romance between a wealthy playboy and a college co-ed. The steamy series is igniting sales of the trilogy worldwide. Author E.L. James even made a trip to South Florida to sign copies for fans.
Even Jacoby-Hale admits she's read James' work.
"I give her a lot of credit for putting herself out there, I don't think I could have -- well, I know couldn't of written that," the author said.
"Look, she's doing something noble also, she's saving marriages and sex lives around the world."