Entropy to favor irreversible RxN

People are like particles in varying states of entropy. On one end of the spectrum, that equates to us bouncing (ideas, emotions, bodies and whatnot) off each other until we elevate the overall level of chaos and excitement within our confined environment to the point of being primed for a reaction. Incidentally, my "s" key is sticky, so please forgive any typos. Did someone spill coke on my laptop?

I guess that in general... nevermind. scratch that. I dislike generalities. Specifically, what I am thinking about right now is someone I'm not getting along with: irreconcilable differences, one could say. The major difference being that she insists on acting like a child and I fancy myself at least a fledgling adult. This is psychologically speaking, since the person in question is a decade older than I. And anyway, I was thinking about how each one of us is affected by the personalities we encounter.

Now, to be specific again, what I was just thinking about was the utility of having such a toxic person in one's life. And what led me to that line of questioning was the realization that I spend a not insignificant amount of my time lately consciously ensuring that I embody qualities quite opposite to those I dislike in said child.

In a sense, toxic though she may be, she's helping me be a better person according to whatever subjective standards I've imagined over this lifetime. It doesn't help our relationship, but it helps me be.