My 8 yr. old is having nightmares. She says she is being chased by someone in each dream. However, she only seems to mention the nightmares occasionally, when she is upset by something else. At other times, when I ask her about them, she says they're not a problem and that they don't bother her. I already asked her if anyone "real" was scaring her, or had hurt or chased her, and she said no. But then after a while, she brings it up again.

SO, should I keep investigating, or drop the whole thing until she makes a big deal out of it?