nju

In a sentence

• Vidio sam nju u parku.

  I saw her in the park.

  In this sentence, 'nju' is the accusative form of the pronoun 'ona' (she), used as the direct object of the verb 'vidjeti' (to see).

• Razmišljam o njoj svaki dan.

  I think about her every day.

  Here, 'njoj' is the dative form of the pronoun 'ona' (she), used after the preposition 'o' (about).

• Čuo sam priču o njoj.

  I heard a story about her.

  In this case, 'njoj' is also the dative form used after the preposition 'o' (about).