She is on-the-nose about the upsides, but doesn't talk about the downsides enough, IMO. It's tough leaving friends and family behind. Also, the creature comforts! They don't have Costco or Trader Joes or good diners in Europe. Knowing where to buy things, knowing the language (the worst thing is navigating phone trees in another language), knowing how the various systems of which you are a apart work. You realize how much knowledge has seeped into you, almost by osmosis, that you take for granted, and now it's gone. New knowledge will seep in, in time, and meanwhile you must be okay being ignorant, and therefore at risk.