My ten year old daughter has recently developed a real problem when it comes to bedtime. She appears to be consumed with anxiety. She is anxious about her health says she got pains in her arms and legs, but is fine through the day. She cries for no reason and just says she's worried. She is well adjusted in every other way, no changes in her home or school life, I have tried patient and understanding, tried tough love nothing working at my wits end. Any advice would be gratefully received.