My DD breaks my heart every time she says she is lonely. She is always asking for a sibling. Then lists all her friends that have siblings. My return list of those with siblings is far smaller. I know kids play their parents and know how to pull the strings but this one is really hard for me to deal with. Often she cries saying that she is sad not to have a brother or sister. I can see her pain and see that she is lonely. Advice please...