Out of Turns — Anne G. Faigen

Hazel "Figgy" Newton is elated at the prospect of a dream vacation. A teacher, she'll spend the winter break visiting her best friend, Tessa, who left teaching to work in Taiwan. Their reunion, Figgy is certain, will be filled with exotic sightseeing, meetings with interesting new people, and adventurous fun. But within hours of her arrival, Tessa leaves on a work assignment she can't postpone -- and disappears. Now Figgy's dream vacation becomes a nightmare . . .