My one year old would wake up every night around 1 and just cry/scream. Take into consideration that she's been sleeping through the night since she was 6 months. Tried everything but nothing works. If I rock her back to she'll be ok but after a minute of putting her down, she'll cry again. So I just have to let her cry it out for an hour so it tires her out so that she'll go back to sleep. She also has no tears. I don't know what's wrong with her. Is this happening to anyone else?