Apollo, I am a born and bred Singaporean who has now come to the beautiful midwest to study. Studied in Singapore all through to high school, got accepted and almost went to NUS (kinda the opposite of your daughter, Apollo!) Like dontcomehere said, quality of life (just happiness and stress level, in general), is very bad in the Singapore education system. I speak from experience of junior college days at a good school, I'm sure NUS is the same or even worse.
Midwest might not be sexy and appealing like San Fran or Seattle or other close-to-coastal US cities, but pace of life is much better for most people, I think.