。
She'll be discharged from the hospital soon.
Literal
[topic-は] before-long will-be-discharged probably.
退院する ('be discharged from hospital') is one half of the pair 入院する/退院する ('enter / leave hospital'), both transparent Sino-Japanese compounds: 入 (enter) + 院 (institution) and 退 (retreat, leave) + 院. Hospital stays in Japan tend to be longer than in many Western countries — partly because the medical system is structured to accommodate this and partly because 入院 historically implies serious treatment. The 1割~3割 patient cost-share under public insurance keeps the hospital path more accessible for a wider range of conditions. でしょう gives polite speculation about the imminent discharge.