It likely referenced the beef Joe has with Teresa’s husband, Luis Ruelas.

Source: https://www.monstersandcritics.com/tv/reality-tv/rhonjs-teresa-giudice-throws-shade-at-the-gorgas-while-praising-joe-giudices-family/

It would also give Ruelas and his two sons a chance to stand in the spotlight with viewers possibly better understanding the connection between the newlyweds - for better or for worse.

Source: https://collider.com/rhonj-teresa-giudice-spinoff/

Likewise, they’ve been fierce protectors of their mother’s new relationship with Ruelas, with each of them stepping forward at the couple’s wedding to give speeches.

Source: https://collider.com/rhonj-teresa-giudice-spinoff/

Ruelas went to go invite Donna, but the olive branch couldn’t be fully extended as she had already left the party.

Source: https://newsday.com.ng/teresa-reveals-why-she-didnt-want-melissas-family-at-wedding/?utm_source=rss&utm_medium=rss&utm_campaign=teresa-reveals-why-she-didnt-want-melissas-family-at-wedding

Yes, we are talking about Teresa Giudice and Luis Ruelas, whose invite most likely got lost in the mail–it happens.

Source: https://www.monstersandcritics.com/tv/reality-tv/rhonj-cast-attend-joe-and-melissa-gorgas-housewarming-party-without-teresa-and-luis/