unconcerned

Completely sane, well-balanced, easygoing harpy.

I think that pretty much sums it up. I am the person behind you as you fumble in your pockets, looking for that elusive last penny. I am the one who gives you an encouraging smile as you turn apologetically towards me, and maybe I will even lend you, a stranger that last penny. Rest assured that I am, however, thinking a various inventive and amusing ways to torture you to death at the same time.