While it's technically true to say (in most cases at least) the man did something to make her lose interest, it's still the woman's fault. Why is it her fault? Because her standards are unreasonably high. As you illustrated, she'll "next" you over the tiniest slip-up.
It depends on the stage you're in; if you just began dating, and thus she's
observing your behavior (as YOU should be doing as well) then depending on the "slip" that lightswitch swiches off and she's done.
She most likely was not that into you and/or found it difficult to connect with you.
Considerate it a blessing and move on from it.
On the other hand, if you have been dating (banging) for a while and she's
very into you, she will "forgive" just about anything, barring abuse, cheating, deception. But even then, she may forgive you, I've seen it!
Even if it involves deluding herself which as a woman and not proud to admit, I have been known to do, as have many women. As I've matured not so much anymore but I used to.
Abuse, cheating, no I don't delude myself about those things, I leave
quietly.
I think it's a great insult to men to say they're left clueless and guessing as to why she left?
Intelligent men know
exactly why she left if/when they screw up, they don't need her to tell him. Only to then accuse her of creating drama or something in some cases, not all.
But again for the most part, IF she nexts you for the "tiniest thing" then she was looking for an out, a reason to disqualify you and most likely not that into you.
Important distinctions.