Her biographer, Clare Mulley, says that, while, it's hard to pick one moment of particular heroism out of so many, there is one that shows her extraordinary calmness and resourcefulness.
"Steps to reduce abuse of the student visa system are welcome but if the government's net migration target is to be met, they also need there to be a dramatic fall in the numbers of genuine students, " said Sarah Mulley from the Institute of Public Policy Research.