Gold Crown - The Jack of Magic, #5

The capital city lay in ruins. Portia helps rebuild it, one smashed building at time. But it's not enough. She cannot forget those trapped on the other side of the closed portal. To get her people back, Portia must find a way around overwhelming forces determined to leave things as they are. Powerful queens and kings, strange invaders, magic, and beautiful young people, The Jack of Magic series has it all.
Portia finds her ultimate destiny in the final book, Gold Crown.