One can imagine Lady Capulet saying it with strict manners and real and genuine feelings to warn Juliet of the beauty of loving and marrying the prince. Using metaphors is a very strong way to fundamentally convince a person to do anything because giving relatable topics to your main point can make the listener understand more thus making him relate more often which brings more interest in a given subject. Lady Capulet does this in her speech to Juliet, but she doesn't seem to be convinced but says that she will try to like him.
One can imagine Lady Capulet saying it with strict manners and real and genuine feelings to warn Juliet of the beauty of loving and marrying the prince. Using metaphors is a very strong way to fundamentally convince a person to do anything because giving relatable topics to your main point can make the listener understand more thus making him relate more often which brings more interest in a given subject. Lady Capulet does this in her speech to Juliet, but she doesn't seem to be convinced but says that she will try to like him.