W.S.
I know it might sound counter productive, but I would recommend totally forgetting about it for awhile. It almost seems like a power issue now, because you are reminding her daily. Even though it is in a nice way, she still senses that it's something you really want her to do, and she can feel powerful by refusing. I read in a baby book one time to never get into a battle over food or potty training, because those are 2 areas where we really can't MAKE them do anything we say, and so they tend to really assert themselves in those areas. KWIM? Again, I know you aren't "Battling" over it, but really they are very smart, and she KNOWS what you want from her.
Anyway, that's just my advice. I think if you really let go of it, and don't even make tiny remarks or faces or anything, she will be able to realize her OWN desire to go on the potty. Hopefully that means she'll train very shortly after that. But at least, if not, you'll be able to make a fresh start.
Good luck!
Lynn