Credit: Video Still

It looks like the Real Housewives of New York Season 5 drama reaches new heights on Episode 12 (airing August 20). Ramona Singer and Sonja Morgan both miss out on Aviva Drescher's charity event — Ramona for a dermatology appointment, Sonja to take her very sick dog to the vet — and Aviva is not pleased.

In this sneak peek of the episode, the ladies sit down to lunch to hash out their issues. Spoiler alert: It doesn't go well.

Yes, Ramona admits she could have rescheduled the doctor, but Sonja balks at the suggestion that she should have had someone else take her precious pooch to the vet when there was a chance she'd have to put the poor doggie down.

As for Aviva? Well, if you've seen the preview for the episode, you know how she feels: It wasn't about her, or her charity, it was about the children who are missing legs!

Check it out below.

Credit: Bravo © NBC Universal, Inc. Photo: RHONY Sneak Peek: Aviva Flips Out on Ramona and Sonja (VIDEO)

The Real Housewives of New York airs Mondays at 9 p.m. ET/PT on Bravo.  

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