。
She finished the work easily.
Literal
She [topic-は] easily that work [object-を] finished.
終える is the transitive verb 'to finish [something],' paired with its intransitive partner 終わる ('to come to an end'). The transitive frames the subject as actively bringing the work to completion — 'she did the finishing.' Compare 仕事が終わった, where the work simply ended without anyone in particular doing the finishing. This transitive-intransitive pairing is one of the most useful patterns in Japanese to internalize: each pair expresses the same situation from a different angle, with the choice carrying who-is-responsible information that English typically buries in passive vs active voice.