Editor’s Note: I told you so.
If you are a good swimmer, you can give her some points on improving her stroke. Girls don’t mind being helped by an expert. If you’re very encouraging about her progress, she’ll be asking you to take her out often.
If you find that she’s one of those too-too-helpless creatures who’ll never learn, but who just likes to hang on and pretend she’s interested, you can let her slip into the water by accident, or suggest that she has too delicate a heart for swimming and that sitting in the sun will be more healthful.