Sleeps like a baby?!?

I would like to know who in the world ever came up with this saying? Libbi is sleeping through the night so i'm not talking about that.. The girl will NOT nap! And she is the lightest sleeper I have ever seen! She will take about 4 or 5 20 minute naps in a day. I don't know what to do with her! I guess if she's happy and sleeping all night I shouldn't worry? If I crack her door to peek at her, she wakes up. If the kids run down the hall, she wakes up. If the doorbell rings, she wakes up!! She needs a soundproof room i think! (hey, there's a new project for Kurt and Chase!!) I would really like to get her on a napping schedule so any advice would help!