I don't think there will be a problem with being embarrassed at kinder. It's a fact that there will be many accidents by several kids in the first few weeks. It will probably be a great learning situation for her and a bit of a novelty using the toilets.

Some kids take a bit longer to want to go when they first feel the urge. I think it's due to other more important things going on and before they realise they can't hold on anymore.

She'll get it soon I understand your frustration though!