They actually did, exactly that. Let's not forget Crystal is a pure copy of Storm's powers just with all elements.
Putting aside the above, I was thinking about Storm Godhood and something flicked in my mind. Storm represents both Gaia and Typhon, the Primordial Deities of Earth and Storms. I wonder... if her bloodline sprout from them. I mean Typhon was the god of the storm, and Gaia has the same Empathic link with Earth, she is the Earth itself, so Storm Empathic capabilities may come from Gaia, while her weather manipulation powers come from Typhon. Just a theory I had in mind.