Answer:
it doesn't make you a family by blood or by law, the thing that makes you family is love. it may sound silly, but it is true, i am fostered and that is what makes me part of the family according to lots of people but, it isn't. i love my family and i am gratefully for them truly. so if someone says family, don't think it is by blood, law. think it is the people who love and care for you.
hope this helps