её не видели

didn't see her

→ она
phrase Rare #38,927
didn't see her The subject is usually omitted; видели is the plural past-tense form, so the phrase can mean “they didn’t see her” or, in context, “she wasn’t seen.”
RU: Вчера её не видели в школе.
EN: They didn't see her at school yesterday.

Нигде её не видели?

Has anyone seen her anywhere?

— Дорога, которую он выбирает (2014)

Больше её не видели.

She was never seen again.

Они её не видели.

They didn’t see her.

Мы её не видели.

We didn't see her.