Is Her's Correct? Can We Use It?
Apostrophes have many functions, but they can be problematic, too. For example, we should never use apostrophes to express possession with possessive pronouns.
Why People Make This Mistake?
Especially with those possessive pronouns, like 'hers' and 'theirs' ending in S already, you might instinctively add the apostrophe. But it's wrong.
Function 1: Possessive Pronoun
'Hers' is a third-person possessive pronoun that we use to talk about something that belongs to a woman, girl, or female animal.
She took his hands into
Function 2: Generic Pronoun
Sometimes, especially in written texts, 'hers' is used to refer to a generic person without considering that person's gender. Many prefer to use 'his or hers' or 'theirs' as an alternative.
The writer stated other people's opinions which more or less agree with
Function 3: Non-human Objects
Sometimes in formal and written English, 'hers' can be used to refer to a country, nation, car, machine, or ship.
of + possessive pronoun
Sometimes, to show belonging you can use the structure of 'of + possessive pronouns'.
I'm a friend