The Twin Stars by Bridgette Dutta Portman

Olive Joshi is an imaginative and anxious sixteen-year-old. She finds refuge from her worries in writing stories about Coseema, a magical princess on the distant planet Lyria. Coseema is fearless, confident, powerful, and perfect — everything Olive thinks she’ll never be. When she falls through a portal into her own abandoned story, Olive finds herself in a world in peril: double suns scorch the planet, the brutal Prince Burnash seeks supreme power, and Coseema has gone into hiding. With the fate of a star system on the line, can Olive find the hero in herself?

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Category: Fantasy – Coming of Age

In the second book of the Coseema Saga, Olive is on the run in a universe quickly spiraling out of her control. Together with her friends, she heads for a distant planet in search of the legendary starship the Wave-Rider, which may be the only hope for the doomed people of Lyria. But the voyage there is littered with obstacles—the tyrannical ruler of a dying colony, a mysterious spacefarer, and Olive’s own obsessive fears.