First Halter Class

My daughter will go to her first show in mid-June with Tequila. She is showing in the halter class. I'm a little nervous for her. I've never done anything like this before so I'm not sure what to do or how she'll feel if she doesn't place where she wants to. Our trainer will be there with us the entire time though so all I really need to do is relax and let them do their thing. I don't do well with "relaxing" though.