That would be amazingly useful because the problem she keeps having is that people come to her thinking she can magically fix Whatever Is Wrong With Their Life. It doesn't work that way, but Tierra is no theoretician. She just does her thing, and sometimes people are delighted, and sometimes they hate it. They don't know how to figure out in advance what will happen, and she's not great at telling them how to do that. Just being able to ask the right questions in this context would be a huge help.