。
She's not only honest but also wise.
Literal
She [topic-は] honest [not only-だけではなく] wise.
~だけではなく means 'not only X but also' — it extends beyond a single quality to add another. 正直 (honest) + だけではなく + 賢い (wise). This is a common pattern for complimenting someone with multiple virtues. The は in ではなく adds contrastive emphasis.