Panic not! You may be in for an easy ride like I had.
My DD1 is very intelligent and very articulate but had absolutely no interest in potty training (esp since her newborn baby sister wore nappies, she still wanted to be mummy's baby too - though she wouldn't admit it).
Everyone kept asking when I was going to potty train but I just didn't feel like going through all the hassle with DD2 'monster' to cope with too so I left it.
When she was 3yr 2 months she went up to the next class at nursery where most children were potty trained so I spent a week making out how cool mummy's pants were , then took her to tescos to get some cheapy pants of her choice. The next day she wore pants, used her potty 23 times (honestly) but had no accidents, every day the number of potty uses decreased until it was what you might consider a more 'normal' frequency and that was it - job done! At night she wore 'bedtime pants' bambino mio training pants so she knew if she hd had an accident but we didn't end up having to change the bed all the time.
If your DD is very smart like you say, I bet she'll tell you when she's ready to start (she's probably too busy with other, more important, things right now). btw all those fancy pull-up things and feel-wet nappies didn't work for my DD1, they were a waste of time and money and just confused her.
Good luck, but I bet you won't need it