One thing about the author, is that she's a traveler (not a Gypsy, but someone that has traveled a lot; even as a kid).
So am I. I spent the majority of my early childhood, bouncing around a number of nations.
It has given me the "ability" to drop even very intimate relationships at the drop of a hat. I've heard that this is a characteristic of "military brats."
I will not have talked to someone for a decade, then, when I see them again, I assume that we can just pick up where we left, and they are like "Who the hell are you? No way!".
I've learned to correct for this. It means that I need to make the effort to stay in touch, but I have also learned that some folks aren't interested in reciprocating, so I have learned to let those go.