I see absolutely no reason not to take her to ringcraft where you and your daughter can learn with Rose about showing cockers, and entering some companion shows. As Jane said, she will need some more coat, and if you have shown Weims then you are familiar with breed standards, so you can read the cocker standard and decide for yourself.
In the meantime you and your daughter will gain valuable ring experience, meet new doggie people and have lots of fun with your dog, so why not?