"He was quite disappointed, but I wouldn't say that he was angry," she told WNYC.
"With 20/20 hindsight, in the context we're in right now, we can always look back and say, 'OK, was it retribution?'" Zimmer told the station. "I really hope that's not the case."
According to the Zimmer, Christie officials made it clear to her in the spring that development approval was needed for her to receive additional state aid for Sandy.
"The fact is the lieutenant governor [Kim Guadagno] came to Hoboken, she pulled me aside in the parking lot and said 'I know it's not right, I know these things should not be connected, but they are and if you tell anyone I'll deny it,'" Zimmer said.
In her appearance on CNN Sunday morning Zimmer said that Guadagno told her the request was a "direct message" from the governor.
According to the Associated Press, Christie spokesman Colin Reed issued a statement Sunday saying, "Mayor Zimmer's categorization about her conversation in Hoboken is categorically false."
Zimmer also alleged that she was pressured by New Jersey Commissioner Richard Constable to reconsider the development when they were at a television special. A spokesperson for the New Jersey Department of Community Affairs called the accusation "categorically false."
Christie spokesman Reed said Zimmer had posted multiple messages of support for Christie on Twitter, even after the conversations last spring during which she says she was pressured to back the development.
To be clear I am very glad Governor Christie has been our Gov. I am not endorsing bc of Hob's non-partisan mayoral race.— Dawn Zimmer (@dawnzimmernj) August 20, 2013
Reed also pointed out multiple instances where Zimmer thanked Christie for his help in the days immediately after Hurricane Sandy.
Editor's Note: The eighth paragraph of this story has been has clarified to show that it's unclear how much of the promised aid to Hoboken has been received.
ABC News' Josh Margolin and the Associated Press contributed to this article.