Over a glass of pét-nat and bar snacks, my friend is venting about someone we both know with whom she’s fallen out. Words like ‘narcissist’ and ‘gaslighting’ are thrown around as casually as drink orders. Having heard the other side over a coffee a few weeks prior, I piece together two versions of the same story. As is the case in most conflicts, neither — and both — of them are right. Most of us have been a version of each of these women at one point or another, and as…

