Oh Ying,
Please don't let all this e.c. talk make you feel that you "should". From what I've read putting a baby on the potty and trying to help an independent-minded toddler to toilet train are two different things! I totally expect that once my crawling 8 mo can walk he will probably not want to sit still on the potty and may revert back to full time nappies for a while. It really doesn't matter - they all end up learning to use the toilet either way
. Maybe, like others have said, get a potty and see what she thinks, but definately don't push it. Go with what feels right - for you too.