Beheld her as a woman embodied with angelic
quality and perfection, but that's merely your perception. I am
dead sure that your 'still-kept-in-contact' is but causal and
superficial. Nothing too deep inside.
Chances are, you are not very close to her as well.
And that goes to show that you probably know next to nothing about
her inner self, growth, experience and development of four years
after graduation from secondary school.
Many things would have happen within this time frame and your
perception of her is still the little girl at the age of sixteen.
Of course there's much 'impression discrepancy' which you would
need to update.
P.S: This has nothing to do with Singaporean Girls. Logically
speaking, she cannot represent the entire woman folk as this is
another isolated case. You may have a more prudent way of what
woman should be and I am sure some woman wouldn't disagree with
you, but that doesn't mean that your view is absolute to
everyone.
Different people have different cosmic lesson in their life. That's
how it always has been and will be. 
Cheers
