There is a method called 'elimination contamination' that is basically a European pre-cursor to 'american potty training' and it starts very very young.
Basically what is happening is that your daughter is feeling the air and change in temperature and it is stimulating her response to urinate.
Is that trainable and is it possible that you can get her to replicate the behavior? Sure.
As long as you understand that YOU are the one being trained. You have to watch for cues, make sure that you don't wait too long, make sure she is somewhere she can "go" etc etc etc.
It's not actual "potty training" until SHE can communicate the need, control the urge and then go through the several steps (get to the potty, undress, get on the potty, go potty, wipe, get off the potty, get dressed, flush, wash hands) and then recognize the consequences if the aforementioned sequence doesn't happen - "uh oh".
Personally I wouldn't do this - but my potty training was a breeze with my daughter. I simply waited until she said she wanted to do and then she did it. So anything else seems like a lot of work.
Having said that - anything else is worth a try if it makes your life easier.
Good Luck!