Sat across from Larsa and the rest of her castmates at Julia Lemigova's F--k Cancer party, the topic is broached after Lisa Hochstein openly asks Guerdy about her health following their conversation at a separate event just days prior.
"I can't believe what's happening to you, and we talked about it the other night. I tried to question you...," Lisa begins before Guerdy interjects.
"You already knew," Guerdy says.
It's then Larsa jumps in, knowing full well Guerdy's retort is aimed at her.
"Guerdy, you never told me not to tell anyone," Larsa insists.
Guerdy hits back, "Larsa, you are completely mistaken. You even made a joke about TMZ."
While a clip from a previous episode shows that Guerdy did in fact ask Larsa to keep the news a secret, Larsa seems flabbergasted over Guerdy's anger.
"Were you not going to tell them?" Larsa asks, to which Guerdy replies that she was, even before posting the news on Instagram for the world to see, had Larsa not spilled the tea first.
As for the "test" Guerdy said she was giving Larsa, Guerdy said before re-entering a friendship with Larsa after previous squabbles, she wanted to see if she could trust her with information as sensitive as her breast cancer diagnosis.
"It's a way for me to start with you as a friend again, and letting you into my life," Guerdy explains. "You were irresponsible with the information."
"I was trying to do you a favor and tell the other girls," Larsa claims. "I told them from a place of love."
"I'm just not gonna deal with someone calling me a liar. I was literally trying to get the girls to rally around you and show you love," Larsa says in a confessional. "And if you don't know that about me, then you're the liar."
After Lisa too says she believes Larsa was coming from a good place, Guerdy decides to leave the party, telling the group, "If it happened to you, you would not like it."
Larsa sticks around trying to share her side of the story, but the women are divided, with some siding with Guerdy, and others giving Larsa the benefit of the doubt.
Later in the episode, the group appears to mend fences, at least long enough to make it out to Palm Beach for a group trip. How long that will last, however, remains to be seen.
Catch all the drama on The Real Housewives of Miami, airing Wednesdays at 9:00 p.m. on Bravo.