My daughter just turned 3 last month, but she WILL NOT use the potty! She's showing all the signs that she's ready.. taking off her wet diaper and asking to be changed, but she WILL NOT pee pee on the potty. I tried giving her a treat for sitting on the potty, and now, she just goes to sit on it when she wants a treat. I stopped giving her treats and she stopped sitting on the potty!! HELP!!!!!!!!!!!