。
She refused to do what they asked.
Literal
She [topic-は] they [subject-が] asked-for thing [object-を] do [nominalizer-の] [object-を] refused.
A small grammar showcase: a relative clause + nominalization + matrix verb. 彼らが求めた ('they asked-for') modifies こと ('thing') to form 'the thing they asked for.' That noun phrase becomes the object of する ('do'), and the whole ~することof being-asked is then nominalized by の and made the object of 拒んだ ('refused'). Three nested clause levels, all visible from the embedded subject marker が (in 彼らが) and the two を-marked objects. Notice how Japanese embeds these within a strict word order — the same idea in English needs 'what they asked' as a free relative.