Akasha Series by Terra Harmony

Elemental powers in the palm of her hand...and it won't be enough to save her. When Kaitlyn Alder is involuntarily introduced to a life of magic, she becomes part of an organization hell-bent on saving the Earth. Just as her new-found life holds promises of purpose, romance, and friendship, the organization divides and a rogue member holds Kaitlyn hostage. Now one of the most terrifying men the human race has to offer stands between her and Earth's survival.

She carries more than elemental powers. In ‘Air’, the sequel to ‘Water’ of the Akasha Series, Kaitlyn has a secret. One she won’t be able to hide much longer. As the strongest Gaia the planet has ever seen, she must face mankind’s greatest enemy as he campaigns for ‘One Less: Depopulation’. Everything depends on Kaitlyn fully embracing her role as Gaia. Her family. The Seven. The Earth. Something has to give, and it won’t be Kaitlyn. 'Air' is the second book of the Akasha Series.

Elemental magic is a weapon of power, on both sides of the war. The Seven has another leader, Kaitlyn is a new mother, and everyone is busy building their armies. During one battle, the secret to Akasha is discovered, and the race to master it is on. With all eyes on the prize, what matters most gets left behind. It is up to Kaitlyn to preserve the planet in the wake of the pure destructive power of Akasha, and the humans who wield it.