。
She says cutting things.
Literal
She [topic-は] biting things [object-を] says.
辛らつ (しんらつ) is a na-adjective meaning 'biting, scathing, caustic' — sharper than きつい ('harsh') and more specific than 厳しい ('strict'). The full kanji form 辛辣 uses the uncommon character 辣, so the mixed-script spelling 辛らつ is standard in everyday writing. The pattern [adjective]+ことを言う ('to say [adjective] things') is a common way to characterize someone's speech habits.