。
She gave birth to a healthy baby.
Literal
She [topic-は] healthy baby [object-を] gave-birth-to.
出産する is the formal/clinical word for giving birth — the kind of verb you'd see in news reports, hospital paperwork, and announcements. The plainer 産む or 生まれる are more conversational. 赤ん坊 ('baby') is one of three common words for an infant: 赤ん坊 (everyday), 赤ちゃん (affectionate, also for older infants and even pets), and 嬰児 (formal/medical). The な-adjective 健康 sits in its modifying form 健康な before the noun.