Tracy the Fire Witch by P. G. Allison

When a nightclub in Munich is bombed by terrorists just days before Tracy starts her spring break vacation from West Point, the U.S. government’s special task force asks her to join the team they’re sending to Germany.
They’re hoping to stir up those terrorists and make them scramble. The team already has one witch plus a couple of werewolves. Having Tracy along will provide them with some added firepower.
When she asks her soulmate John if he’s okay with going with her, he replies, “Germany? Werewolves? Maybe some terrorists? What’s not to like?”