Can Her Be an Adjective?

As detailed above, 'her' can be a pronoun or an adjective. Pronoun usage: Give it to her (after preposition) Pronoun usage: He wrote her a letter (indirect object) ... Adjective usage: This is her book.

Is her an adjective or adverb?

her (adjective) her (pronoun) hers (pronoun) what's–her–name (noun)

What kind of adjective is her?

Possessive adjectives

The most commonly used possessive adjectives are my, your, its, her, his, our, their, and whose.