Isabel Chalmer's parents divorced when she was a young girl. This is her idea now about "what family truly is":
I believe in the cliché that states that family is who you chose as much as it is who you are biologically related to. I have some friends who I would consider family, based on the length, dedication and unconditional love within our relationship and some blood relatives who I do not consider family because of the lacking of all those previously listed qualities. Family to me is anyone whom you unconditionally love and whom unconditionally loves you...
Family is really indefinable. It is much less tangible than people are led to believe. Family is a feeling you get with certain people in your life, much like home is never actually a place. Family is whatever you choose it to be and is to be felt more than seen. It is wherever you feel loved and secure and is a very subjective and personal experience to each and every person. [italics mine]
There's something of a contradiction in this, as Isabel claims that family is indefinable but then proceeds to give a definition ("it is wherever you feel loved and secure").
Still, you get a sense of where liberalism is taking things. There is an insistence that the family is something that has no fixed character, but is fluid and evolving; its character is vague and not something that can be objectively defined.
The point of this liberal drift is to make family relationships a matter of personal choice and to keep as open as possible the idea that family relationships can be defined subjectively (so that we don't impinge on the freedom of others to self-define how they live).
The problem, of course, is that not much is left of the family at the end of all this. If the family can be whatever I choose it to be, then it has little real meaning or significance. It has become formless. At best, if we take the definition allowed to us by Isabel Chalmer, family is a circle of friends we feel supported by.
It's a long way from the very particular family relationships of husband and wife; father and mother; brother and sister; grandfather and grandmother; uncle and aunt and so on, with each of these roles having a particular character, set of duties, form of loyalty, and experience of love which form part of the way we fulfil ourselves as men and women.