S.C.
K.,
I empathize with your situation. When my now 3.5 year old girl turned 2 I was expecting my 2nd child and on bedrest. We went through a phase where I thought I was the worst mother in the whole world. She could turn from a funny little angel into a fire-breathing dragon so fast it took my breath away. I even started to question my decision to have another child.
She was also quite advanced for her age, walked and talked early, amazing memory and all that.
Suffice it to say, it all really is a phase. You just have to get through it. I had a really great moms group to talk to about my difficulties with her that helped me gain perspective. It really is OK to not like your kids sometimes- and I often had to give myself a time out to calm down in order to deal with her without losing my cool.
Unlike other respondees, I don't recommend you take her out of her crib yet. If she's happy in there leave it alone. Our problems only became more extreme with my 2 year old when she discovered she could let herself out of her room. Hours of power struggles every nap and bedtime resulted in anger and frustration for me and my husband. If you are in the midst of a power struggle don't add one more topic to battle over!
We had her round up all the paci's and leave them on the doorsterp for the paci fairy to pick up to distribute to all the new little babies. The paci fairy gave her a big present in return! We had some tears and begging to get it back but held firm. They were gone and that was that. We built up the paci fairy story for a few weeks before she decided she was ready to exchange them for her "cool new presents"!
Hang in there and know you're not alone!