Soul of Fire – Laura Gilman

Three months ago Jan learned that elves were real, our world wasn’t safe and it was up to her to save her boyfriend—and the world—from being englamoured into slavery. Now Jan has a new deadline—ten weeks, ten days and ten hours. That’s when the truce she arranged between our world and the elves’ realm ends, and the invasion starts.While supernatural creatures work to defend humanity, Jan and the kelpie Martin have to find the preter queen and use her to force the portals closed. But when magic mixes with technology, shutting it down isn’t as simple as closing a door or pulling a plug… Jan’s geek-girl know-how might have gotten her this far, but they’re going to need technical skills and magic to shut the portals for good…And their time’s nearly up.