I think she deludes herself that she is this worldly person, but in reality, I'm not sure she could survive being away from home for a year or more without the constant visits back or visits over from her parents. Most people I know who move abroad don't come home every year, much less twice or three times a year and most don't even have half the support network she has in the States what with her sister and boyfriend with her.
I had a feeling Lorna would be going home, she seems like a huge homebird as well!