I think it would be good and interesting writing, especially since her personality clashes with the nature of her power. It'd allow for creative use of her ability instead of the war of attrition conclusion most people would jump to. Abraham, for instance, has an entire sect of his own power that he simply can't use (or use well) simply because he doesn't have a certain mindset, but he makes do. Someone far more patient with the same power would probably use it to create sandstorms, and if they're less brave than Abe is, morph into sand and mesh with the storm instead of turning into solid stone so that they can't be seen.

Any power can work for any person, it just depends on how you use it.