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Teresa Giudice didn’t cut newbie Jackie Goldschneider any slack at her first “Real Housewives of New Jersey” reunion.

Teresa “really went after” Goldschneider at the Season 9 reunion taping on Thursday, an insider told Page Six on Friday. The women have been at odds since Goldschneider, 42, brought up Joe Giudice’s prison sentence while trying to defend Melissa Gorga to Teresa, 46, earlier in the season. The two seemingly mended their relationship over coffee, but their truce didn’t last.

“Teresa went hard,” the insider said. “Jackie stood her ground.”

“The picture that came out on social media of Jackie at Teresa’s book signing was a big conversation,” the insider added, explaining that the ladies thought her being a fan of the show may have tainted her opinions prior to joining the cast.

We’re told Goldschneider’s local news article about Jennifer Aydin spoiling her kids was also a point of contention.

But Goldschneider wasn’t the only one in the hot seat as we’re told that “there was a lot of fighting.”

Giudice and her sister-in-law Gorga pushed each other’s buttons, while Danielle Staub and Margaret Josephs revisited the fallout of their friendship. Josephs also got into a heated exchange with Aydin.

The insider noted that this may be the most “aggressive” reunion to date.