。
She told her son to wait a moment.
Literal
She [topic-は] son [to-に] a-little wait [so-as-ように-と] said.
~ように言う is the indirect-command pattern: 'tell X to do Y.' The ように nominalizes the desired action; the と is the quotative; 言う is 'say.' ちょっと is the everyday quantifier 'a little, a moment, a bit' — extremely common in casual speech, often softening requests. 待つ ('wait') stays in dictionary form before ように.