But now, a source close to RHONJ tells ET that Staub could be coming back for season 8, and that the idea was actually Giudice's.
"[The idea of her coming back] all happened after they filmed the RHONJ reunion a few weeks ago," the source explained.
During the season 7 reunion, Staub's name came up, and Giudice actually apologized for the way she behaved toward her during one of their most infamous blow-ups.
"Danielle has been very complimentary to Teresa on social media since her legal issues and jail time," the source said. "So, after the reunion, Teresa thought to reach out to Danielle to say hi. Teresa has really turned over a new leaf and figured, 'Why not? Life is too short to hold grudges.' And she will definitely be a great ally for Teresa to have."
"I'm breaking my silence and writing my tell all including the 'Reality of #RHONJ' the impact on mine and my family's [lives]," Staub wrote. Check out the video below to hear more about her potential plans for the revealing memoir.