I don't believe she would become a guardian, however I thought it was an interesting question since she poses traits that are common for both classes.
She is strong, forward, and aggressive like a Titan. At the same time she is wise, knowledgeable, and capable of wielding powerful space magic like a warlock.
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Warlock. Not once have I've seen her use Brute Strength. She's more of the Mystic. Like Gladrial (Spelling isn't my best) from Lord of the Rings/ The Hobbit. Not the terrible version in ROP.