My little girl is 3. Her bedroom is upstairs and out of her window it backs on to a big field and public footpath. I'm struggling to keep her room cool and want to keep her window open for the night as I think it will really help. I normally never do this as paranoid someone going to get in (I think because of Madeline McCann story..) not sure if I'm being OTT. Just wondered if anyone else leaves their kids bedroom windows open?