DD seems to spend 80% of her time talking to me and my husband in a babyish lisping voice - been going on for at least year but seems to be getting worse. She doesn't have problems with her speech and i have asked her teacher who seemed amazed as she said she is so mature in school. I've really tried ignoring it and/or saying "please talk to me in a clear voice" but its not reducing! Now when she enters the room i am on edge with frustration because i know she is going to do it and so i am tense around her - it is really affecting how i feel about her. Does anyone else have this with their child or have any advice?