his sister
I’m friends with his sister.
Su hermana hace la Primera Comunión hoy.
Her sister is making her First Communion today.
— Mystic River (2003)
Él dio su sangre para ayudar a su hermana.
He gave his blood to help his sister.
I like his sister a lot.
Su hermana no puede hablar hoy contigo.
Her sister can't talk to you today.
Ella tuvo que cuidar de su hermana.
She had to take care of her sister.