
First of all don't worry :) Pups always misbehave, they shouldn't be liottle robots and the judge will make allowances for her age.
Have you been asking her to sit for a treat? With my show dogs I never ever teach them sit until they fully understandnthe stand command, they are always given treats standing. A useful thing to do is to have a pocketful of her favourite treats and take her out into a busy area for a walk. She's a cute puppy, people will stop and talk to her. Ask each one to give her a treat...but to move the treat away from her nose and give it to her when she stands up. It could be nerves making her sit when people look at her, if loads of strangers give her treats she hopefully soon be standing wagging her tail at the judge waiting for a sweetie :)