Bella,
You miss them because you love them and they are your family. I have a similar situation. I have not spoken to my brother since christmas. He has not called and neither have I. We didn't have a fight or anything but things have been rough for me and I need to be away from him at these times because he is too negative. He also thinks psychology is crap. Soooooo I will see him this summer I am sure, and it will be like nothing ever happened.
You are just taking care of yourself at this difficult time. Keep up the good work.