Her brief appearance in Ultimates was interesting, suggesting a powerset different than the average telepath, with some sort of psychometry, as well, which was neat. I like the idea of exploring a completely different alien sort of mentalist.
Is she just a 'mutant telepath' of her race? Is her entire race telepathic and she's an above-average example? Is her entire race weakly psychic (and / or a hive-mind), and they pick one person in each generation to gestalt the bulk of their power, and send her off-world to represent their people before the Shiar, so that she maintain the illusion of being a powerful psychic, but is actually channeling the power of thousands, or perhaps even millions, of members of her race at any given time (meditating in shifts, lending her their small individual power during their 'sleep cycle')?
Or are they instead the pale husks of a special caste of people who give themselves over to psychic entities that lack physical form, and live in tunnels deep within/beneath the waters of their world, becoming a hybrid entity?
All sorts of fun stuff could be done, far more interestingly than just 'she's a mutant' or 'all of her race are telepaths.'