。
She's getting married this fall.
Literal
She [topic-は] this fall marries.
A clean polite future statement. Note Japanese has no dedicated future tense — the present-tense form ~します covers both habitual and future, with context (この秋 'this fall') supplying the temporal anchor. 結婚する ('to marry, get married') is a Sino-Japanese suru-verb. The seasonal frame is significant: spring (April–May) and autumn (October–November) are the traditional Japanese wedding seasons — the climate is mild, and the scenic 紅葉 (autumn foliage) and 桜 (spring blossoms) make popular backdrops. Summer is generally avoided due to humidity, and December–January is dominated by year-end and New Year obligations.