Meaning: This sentence means that a female person had discovered or located the reason or goal for her life.
Choice of Words: "She" is a third-person pronoun that refers to a female person. "Had" is a verb that refers to a past action or state. "Found" is a verb that means to discover or locate something. "Her" is a possessive pronoun that shows that something belongs to a female person. "Purpose" is a noun that refers to the reason or goal for something.