Unfortunately this is pretty common and normal for kids to not want to go to preschool. Is she happy after she gets there and you leave? Does she interact and have fun after the initial upset? Is she attention seeking? She might knows it upsets you and maybe that she gets more attention when she does it. Have you tried asking her why she doesn't want to go to preschool. She might have a reason. I know it is hard, but you need to try to stop feeling guilty and tell her the reason she needs to go to kindy is so that you can work and that you have to work. Explain it simply and at her level but tell her the truth. When you get to preschool, do you give her a big hug and tell her you're going to work and will be back at the end of the day (or whatever the routine is for you) and then leave- don't hang around or come back in and out? Sometimes this helps too.