Blades of Accession (Dusk Gate Chronicles #7)

Peace has finally come to the kingdom of Philotheum, but now William, Quinn, Zander, and Linnea find themselves facing the biggest challenge of all: coming into their own as adults.
Newly re-installed as queen, Quinn must learn how to manage not only her kingdom, but the challenging history of her bloodline. While Zander navigates his new feelings for Linnea, a strange visitor appears in the castle, raising the idea that there might be another gate back to Earth.
Faced with choosing between his past or an uncertain future in a foreign world, Zander must decide once and for all what he really wants and what kind of man he's going to be. Together, the Rose family works to reconcile their difficult pasts with their hopes for a different future.