Cate follows through on her idea of a Tourist Guide for a new occupation. She has finally reached her final assessment on the process of accreditation, and she is the lead guide on trip to Mexico.
Part of the backstory are the people she is acting as guide to, the other part, is her broken heart and what she is doing to overcome her lingering depression and loneliness.
Having been on a couple of guided tours, it’s interesting to view things from their point of view.