Translation of "sister" into Czech

My big sister washes her hair every morning.

Moje velká sestra si myje hlavu každé ráno.

She's the nurse your sister works with down at the hospital.

Je to ošetřovatelka, co s ní dělá tvoje sestra v nemocnici.

I've actually been wondering why a sister runs after a bag of jewels.

Zajímalo by mě, proč se jeptiška žene za taškou plnou šperků.

You said it yourself, Sister is the better performer.

Sama si říkala, že Sister je na pódiu lepší.