we used a variety of things...usually tiny treats that weren't too terrible to give a couple times a day including
mini marshmallows (big hit & probably the least sugary/bad for you)
M & M's
swedish fish
chocolate chips
popsicles
The mini marshmallows really worked. They get smart fast, though, and may start asking for them before hand. I used to walk DS over to the potty luring him like a little puppy.
:
But, truth be told, if she's not ready, she's not ready. One day DS was dry overnight, then he was dry all day, then I could leave his diaper off for naps, leave the house w/o a diaper, then no diaper at night after he was dry for like 3 weeks straight. Before I knew it, no diapers at all. Hooray! And he did it himself.
I would put her back into diapers. And not nice dry ones, either, wet cold ones that will remind her how miserable diapers are. If she's refusing completely to potty, it may be easier for all of you. She may get embarrassed or self-concious and start using it willingly.
Oh, some friends of ours used a different system. They got a couple bags of those shiny glass stones from the dollar store and a glass jar. Every time their kids were good, they put a stone in the jar. When they were naughty, they took one out. When it was full, they got to go to something special, or get some toy they had been asking after. A very visual way to see that your actions have consequences.