I always get the impression that she isn't able to settle down in one place anymore, like she did when she was a kid, and concentrate on studying for a long period of time. She is too worried about taking pictures, getting selfies, moving around from library to cafe, back to library, too concerned about social media content. She never seemed to have settled well in her room at Oxford for long. I think the days of devoted concentration left her years ago, especially as the work material became more intellectually challenging and dense. In a nutshell, she is not the amazing student she always defined herself as, and it is showing. She probably spends far too much time gazing out the window, checking her iPhone, looking up answers on the internet and finding ways to get an easy information for her thesis. Then she goes off and add more depressing pictures to her Pinterest account.