Disparaissant - I get the blood is thicker then water thrown in my face by my mom and her brothers all the time. My mom lived with a man for 25 years. He raised us my kids called him grandpa etc. when they broke up in her eyes I was supposed to never talk to him or his parents ever again. His parents have been more family to me then my own.
I think family's are made up of all different things and people. The man that I was never supposed to talk to again has always been there for me and my children and my husband. His mom my grandmother has been more of a mother to me then my own.
So don't get stuck on what "family" is supposed to be. It's what you make it. Instead of being alone on the holidays why not volunteer at a children's hospital or something.
Also make friends here I have met some very wonderful people here.
Take care