。
She pulled out a victory in this fight.
Literal
She [topic-は] this struggle [in-で] victory [object-を] obtained.
勝利を収める ('to achieve/secure victory') is a formal collocation, more elevated than the everyday 勝つ ('to win'). 収める ('to gather in, store, achieve') is the verb of choice when results are framed as something one accumulates or harvests — also seen in 利益を収める ('secure profits'), 成功を収める ('achieve success'). 闘争 ('struggle, fight, contest') is a heavy noun, often used for political, ideological, or labor struggles rather than light competitions. The で here marks the arena of the victory. Together the sentence has a weighty, news-or-history-book feel — the kind of phrase that might describe a major movement or a hard-fought election.