Pushing school start date back stinks!

I am sooooooooo ready to send Katie back to school. I can't wait till next year when she starts full day Kindergarten. She complains about everything and then when I tell her to stop it, she tells me "Stop listening to me. I wish I had a different family then I wouldn't be in this mess. I do not like this house!" She is 4. Can you imagine what a ball of joy she is going to be 10 years from now? By the way, she said all of that in response to me telling her that she had to have milk with breakfast. That's it.