I know No. 2 better than No. 1. It didn't start out that way, but as various crises kept happening to me, she opened up more with a couple traumas in her life.

I would however say that I don't know either that well. I have never asked either about themselves. I am not there to make friends, and our acquaintanceship is temporary, even if temporary turns out to last for years. It works better for me that way.

I am wondering about a definitional problem, though - what is know well to one client might be barely know to a second, and a third might define know well as knowledge of their character, not facts about their lives.