Hello T.,
It is very common for children to be scared of "letting thier pee and poop out". Even though she is a very smart girl, her fear could be a sign that she may not be totally ready yet. I have two boys ages 7 and 3 and a baby daughter who is 9 months old. The potty trainig issue for me was a stressful one with my 7 year old. He was very smart and could speak in full sentences and could feed himself very well at age one, but the potty issue was very different. He wasn't ALL the way potty trained until age three, and this was stressful for me beacuse I was raised to believe that it should be at least until age two. However, my pediatrician said that three was the average age for most toodlers, and I have read many many articles about this age being average, however, I think that it truelly boils down to each individual child, and thier comfort level. Beleive me, IT WILL happen, and it will happen sooner if your daughter does not feel stressed or frightened. Offer her the ability to pee on the potty, let her sit on it and play or let her look at a book, talk about what a potty is for, but let her explore this issue when she is comfortable. She will be more likely to want to learn about it. GUILT never works, and could even delay the process. Good luck, and be patient.
C.