I don't even think she would have really done well in Australia. It takes a lot of courage, independence, resourcefulness, and confidence to successfully move to a foreign country. You need to be truly comfortable with yourself (she can't spend more than 3 minutes on her own). You need to be open-minded and curious (she doesn't care about anything beyond finding ways to improve her appearance). You need to be able to fend for yourself, figure tit out on the spot (she can't even pack in time for a trip and has a break-down whenever she misses her bus stop). She wouldn't have a proper job to help her meet new people organically or make her feel like she's actually part of the local community. She wouldn't be able to cope with not having the option to run away to her mom's as soon as she feels lonely or bored. Sometimes it's the subtle differences that get to you, like when you realize your humor doesn't translate well into the new country (to be fair, her 'humor'--or rather, lack thereof--doesn't translate well among Brits either), or when you realize just how much cultural differences manifest in people's personalities and yours just doesn't match. Anyway, odds are she wouldn't even have properly moved there -- she would have just gone for 3 months on a tourist visa and booked an Airbnb. That's not the same thing as moving.