And then Quad arrived.

Already Toya is shocked that Quad didn't say hello.

We see that side eye, Kari.

The group converges and talks about Quad's controversial wedding day.

Mariah tries to calm everyone down, but the shade is thrown.

Simone attempts to change Quad's train of thought, but to no avail.

Quad accuses Kari of being anorexic.

Kari is furious. Little did Quad know, this brought back old wounds.

Toya continues to try and convince her husband to move into a different neighborhood.

He's skeptical.

Toya explains the recent argument between Quad and Kari.

Simone visits Jackie to discuss the recent drama between Kari and Quad.

Simone explains that not everyone can be as classy as Jacqueline all the time, everyday.

Mariah and her husband discuss upcoming party plans.

Simone finds fulfillment in helping new parents learn more about their child.

Simone may be an OB-GYN, but she's also a mom.

And that means helping her sons with their homework.

Quad is not just a doctor's wife. She has her own career with a medical company.

Kari and Toya meet for lunch to discuss possibly un-inviting Quad from Mariah and Kari's joint party.

Toya is shocked when she hears an exact replay of the text Kari sent Quad.

It was not nice. Not nice at all.

Kari explains the text to her husband, and she urges him to reconsider, because he wants to be friends with every family in their tight-knit medical circle.

Kari agrees, and as perk, she gets to give her husband an X-ray!

Simone has good news for this couple: their baby is healthy and completely fine.

Mariah is not pleased with the bickering going back and forth between Kari and Quad.

Mariah and Quad take a stroll to talk over ways to approach the Kari situation.

Quad is nervous that this argument with Kari won't be smoothed over anytime soon!

Mariah promises to do her best to help Quad.