so let's see. . ..
The little witch tells you that she makes fun of penises that are not up to her specifications, and she makes fun of sexual performance that is not to her exacting standard, and you're surprised that you lacked the desire to have sex with her?
Sounds like your penis is more discriminating than you give it credit for. Perhaps it was trying to tell you something. . . . Get away and don't look back!
Seriously, I wouldn't worry about it at all. She sounds like a class-A jerk who made it plain from before you started that she'd be waiting to pounce on anything she found sub-par. That combined with your lack of sleep is almost certainly the sole reason for your performance issues that night.
Find yourself a woman who isn't a total asshat and you should be fine
