In this case, we need to use "her." "She" and "her" are both gender specific pronouns. However, "she" is a subjective pronoun. This means that it can replace a noun in a sentence. "Her" is a possessive noun and can function as the possessive of "she" or the object of a verb and preposition. In this sentence we need to use "her" because she possesss the place on the ticket.
