The blank requires a reflexive pronoun to denote the subject 'she'. The options 'himself' and 'itself' is unrelated to feminine gender and so they are negated. 'Themselves' and 'ourselves' are related to plural nouns but 'she' is a singular noun and so they are also negated. Option (e) 'herself' is the most appropriate reflexive pronoun that denotes the feminine subject 'she' and can fill the blank as expected.
Hence, the correct answer is option (e).
Note:
Reflexive Pronouns: Reflexive pronouns include myself, himself, herself, itself, ourselves, yourselves, and themselves. These are used to refer back to the subject of the clause in which they are used: She hurt herself in the eye.