pronoun[third person singular]
- used after the verb ‘to be’ and after ‘than’ or ‘as’:it must be her he was younger than herSee usage below.
Old English hire, genitive and dative of hīo, hēo 'she'
Is it incorrect to say I am older than her (rather than I am older than she) or it’s her all right (rather than it’s she all right) and, if so, why? For a discussion of this issue, see personal pronoun (usage).