Family doesn't mean just Mum, Dad and kids, but grandparents, aunts, uncles, cousins and others.
As one dad said to me recently, you don't have in family life to look very far to find your cross.
The story of family life is a story about love - shared, nurtured and sometimes rejected or lost. In every family God is revealed uniquely and personally, for God is love and those who live in love, live in God and God dwells in them (1 Jn 4:16).