。
She still hasn't gotten up.
Literal
[topic-は] still has-not-arisen.
起きる ('get up, wake up, occur') in its 'rising from bed' sense — the resulting state 起きている describes 'is up, awake.' Negation 起きていません ('is not in the state of having gotten up') = 'still hasn't gotten up.' まだ + negative gives the canonical 'not yet.' 起きる has multiple senses: physical rising, waking from sleep, and (more abstractly) events occurring (事件が起きる 'an incident happens'). Context here points to the bed-rising sense — someone perhaps annoyed about a late riser or simply reporting status.