、。
She brought a bento today.
Literal
She [topic-は] today, bento [object-を] hold-and-came.
弁当 (often with the polite prefix お) refers to a packed lunch box, traditionally in compartmentalized form with rice, protein, and side dishes. School and workplace bento are a fixture of daily life; キャラ弁 (character bento, decorated to look like cartoon characters) is a parenting subculture in itself. 持って来る is one of countless ~てくる compounds: a main verb (持つ 'hold') in te-form chained with 来る ('come') yields 'bring,' framed from the speaker's vantage. The mirror image 持って行く ('take') uses 行く for motion away from the speaker.