An 'atrocity' puts a hitch in her enthusiasm, pronto, like a fart that interrupts polite conversation.
...or, in the present instance, spur a spate of rhyming:
Vina is sarcastic, having met this lad before. He is Bi Mun's adopted grandson - sometimes-visitor, always-pest - whom hospitality dictates must be entertained.
"VINA. HAMID'S HERE."
Besides obnoxious (Hamid loudly burps), uncouth (he eats his boogers), and retarded (he is twelve years old with a mental age of six), the terms barbaric, smelly, clumsy, inarticulate, well-describe him (he speaks gibberish, for the most part, knocks things down, exudes a stink, and, with his mouth wide open, masticates food like cud). Otherwise his company is insipid, tiresome, tedious, hence a bore-of-a-chore that those, with taste, avoid.
Vina has no option - though the boy is not her equal; she could make him jump through hoops, were rules of class and rank in force. But Dr. Windmollen, despite his special status as Belanda (Dutch) and his marriage to a Radén Ayu (royal Javanese), insists that daughter act as would have mother; generous, patient, kindly, with the left hand unaware of the right giving alms.
boil his brain