In terms of subject matter, Miranda commands an incredible variety of knowledge. She is a fabulous writer, due to skills developed by being a voracious reader (I have met few people that read more than her) and producing dozens of thoughtful papers on politics and literature, in addition to maintaining a blog that curates articles on interesting happenings around the world. Her ability to recall any country's history and explain it's current affairs is fascinating to listen to. Should you have a question regarding international relations, you'd be hard pressed to find someone better.
Miranda, however, excels most at teaching, specifically communicating her knowledge to others in a way that they can understand, no matter how long it takes. She is able to take complex problems like "clearer writing" or "better essay structure" and break them down into simpler steps that make improvement feasible and recognizable. Personally, when I began taking seminar classes at Yale, classes that require synthesis of loads of reading and long paper writing, Miranda helped me pick a topic, understanding, and build a structure that made my argument easy to follow and support. The sentence perhaps implies that the process was simple. It was not. But Miranda's patience and specific suggestions made my writing improve dramatically by the end of the semester.
But I am not the only one to benefit from Miranda's teachings. In our organization, which plans Model UN conferences for high-schoolers, Miranda successfully trained dozens of college students on how to communicate with children and push them to think of solutions to the complex problems. Shy first years were able to command rooms of 60-70 children for three days and spark and interest in international relations.