Enthroned (King Arthur and Her Knights, #1)

ASIN B00ED0SKLE moved to the most recent edition here

After posing with a rusty sword for a photo in a British graveyard, Britt Arthurs is pulled through time all the way back to the age of King Arthur where the shockingly young and handsome Merlin is waiting for her. The wizard has some bad news: the real Arthur has run off with a shepherdess, and whoever pulls the sword from the stone is to become the King of England. Unfortunately for Britt, the sword slides out like butter when she pulls it after fighting with Merlin. Long Live King Arthurs!