Rival - Fate of the Stars, #2

It's a role she didn't want.One deadly week has passed since seventeen year old Allison Delaney realized she must save Earth from the parasitic race of Ma'tiok. But the task is even more complicated than Allison feared, and she's being set up to fail. Blamed for a fatal blow to the Alliance Fleet that killed dozens of soldiers, Allison must face judgment for their deaths. The High Priestess Kiobaan is Allison's only hope.
Kiobaan sees the warrior spirit in Allison, along with her potential both politically and physically and agrees to train her. And a game she can't afford to lose. Meanwhile, though Allison is the human host of Eenoki, protector of life, she's not yet ready to harness their combined energy. Their bond is unpredictable at best-volatile at worst. Time is running out for Eenoki and Allison to trust each other-all or nothing-or she'll never gain the power she needs to defeat the Ma'tiok and save Earth.
When Allison is marked for death by an unknown enemy, the High Priestess Kiobaan must step-up and fight. But in return Kiobaan extracts a pledge from Allison, one that will compromise her new status and make her a target.