Treating family

I bought a book at the weekend from a remaindered shop about healing. It wasn't about reiki, but more about spiritual healing and as I read, I felt at odds with some of the things being suggested.
One of the things the author said was that you shouldn't treat members of your own immediate family as you are too close to them. This got me thinking, as I believed healing was about giving freely and it didn't matter who you gave it to.
How many of you refuse to reiki your family and close friends? As I thought about it more, I thought about my own situation and to honest, apart from sister and occasionally my father I don't reiki anyone else in the family, they are all external people, strangers if you like who come to me for healing or friends.
I know I have a long way to go in my spiritual development, but feel step by step things are becoming clearer to me and I'm dealing with them. I think one of the things with family is that you are close to them and probably don't see beyond or maybe you're too close for comfort.

I'd be interested to hear what other people do and how they deal with it.