Why is facebook not showing my family?

[Iloveyou<3]

You know how on Facebook you can go and add a family member, and put ___ is your sister, and ___ is your father, and all that fun jazz? Well, when I go to my friends pages you can look under their information box under their picture and it'll say who their sisters are and stuff
But when I go to mine, it only shows my children..not my sisters OR my Dad.
Do you know how to get it to show my sisters in the information box automatically whe you go to their page? Without clicking on the information tab.