。
She wailed deliberately.
Literal
[topic-は] deliberately cried-and-wailed.
泣きわめく is a compound verb fusing 泣く ('to cry') and 喚く/わめく ('to shout, scream') — together it captures noisy, dramatic crying-and-wailing, often with a connotation of childish or theatrical display. Pairing this with わざと ('deliberately') sharpens the picture: this isn't genuine grief but a calculated performance, perhaps to manipulate or get attention. The conjunction of compound verb + intentional adverb makes this a vivid character sketch in just a few words.