。
She regained consciousness.
Literal
She [topic-は] consciousness [object-を] recovered.
意識を回復する ('regain consciousness') is the standard medical collocation. 回復 ('recovery, restoration') is also used outside the body — 信頼を回復する ('regain trust'), 関係を回復する ('repair a relationship'). The Sino-Japanese register fits clinical or news writing; in casual speech, 意識が戻った ('consciousness came back,' intransitive 戻る) feels closer to an everyday 'she came to.'