。
She turned pale upon hearing the news.
Literal
She [topic-は] that news [object-を] heard-and turned-pale.
青ざめる ('to turn pale, blanch') is a single verb capturing the same color-shift idea as 青くなる but as a fixed lexical item — sharper, more literary. The verb is built from 青 ('blue/pale') + ざめる, an old verbalizing suffix. Japanese has long treated the pale-blue range as a single color, which is why 青 covers what English would split into 'blue' (the sky) and 'pale/sickly' (a face). The te-form 聞いて chains hearing to the visible reaction.