。
She's crying.
Literal
She [topic-は] is-crying.
About as compact as Japanese gets: topic + present-progressive verb. 泣く ('cry') in ~ている describes ongoing crying. Japanese has a rich vocabulary for nuances of crying — 泣く is the neutral default, while related verbs and mimetics carve up the territory: しくしく (sob softly), わんわん (bawl loudly), めそめそ (whimper), ぼろぼろ (tears falling in heavy drops). The bare 泣いている here doesn't specify how — only that the crying is in progress.