Polly Klaas was taken from the bedroom of her home too.
This is why I do NOT allow my daughter's bedroom windows to ever be anything but LOCKED!!!!!!!
Please don't take this as a judgemental remark on my part. But in this day and age, this would not happen in my house unless I was incapacitated or killed first (but I'm taking someone with me before they get to my son). But just walking out while I'm sleeping, won't ever happen.