As her username implies, Gaila emits pheromones that attract human males and induce headaches in females. In canon she's an Orion, a race of slavers and pirates that have never gotten along with the Federation or its allies, but for this meme we'll set her in past or present day and explain her pheromones and green skin as a mutation. Oh yeah, she has green skin. Any scenario is fine. She'll be sympathetic to both sides of the argument. Ultimately she hopes for coexistence but depending on the hostility of the setting she will take up with whatever faction can keep her safest, considering the overt nature of her ability. At best, she'll be at Xavier's, and at worst with the Morlocks, chillin' in the sewers.