Answer:
Johan and she are siblings in the Garsh family.
Explanation:
Johan is a subject of the sentence. The sentence is describing Johan.
She is a subject pronoun, so it should be used.
Her is an object pronoun. (ex. That is her pen. That pen is hers. Johan likes her very much.)
Herself is a reflexive pronoun. It refers back to the antecedent (ex. She hates herself.) "Herself" refers to the word "she" in the sentence.
