Hello, I'm glad to answer your question. Is your sister naughty? Only when I am sick can I get a moment of peace, so I think about it day after day and dream at night. Secondly, you love your sister very much. You are not with your sister, so you miss her very much. So your dream that your sister has a fever may be a prophecy. Your sister may be ill, but the third dream objected. Maybe your sister is fine and won't get sick. I hope I can help you. Thank you.