Try bringing up a past event or statement that contradicts her recollection. She'll bury you where you stand.
Example
Her: “mmm-hmm what about that time in Macy's? You really didn't care which outfit looked better or which one complimented me. You only thought of yourself and wanted to get back to all the things you like to do. What do you care about, huh? Because it certainly isn't me.”
You: *sigh*
Second, make sure you mean everything you say because it will not be the last time you hear it. In an argument, she'll bring up things you said before you even met her and they will always cut you down like a bushman with a sickle.
Finally, one thing I've learned (the hard way - but the ribs healed nicely thank you very much) is that women hate to be mocked - especially during an argument.
Should you slip and raise the octave of your voice to falsetto, make a silly face and repeat her previous statement you could very well find yourself in line at the local walk-in clinic with a Lee Press on Nail in your eye.
But don't panic. You might be able to get away with chuckling and saying, “I thought we needed a comedy break. But seriously darling - all this fighting is pointless. I love you with all my heart and I want you to know how sorry I am for everything I've done since birth. I cherish you and everything you do for me just by being you and showing me that rich, true love really exists. I never meant to hurt you 21 years ago when I looked at that waitress's ass.”
It probably won't work - especially if you try it 10 seconds into the fight - but hey, everything is worth a shot when your personal safety is at risk.
No matter how many mistakes you make, be sure to note and fix them: Nothing impresses a woman more than a man who owns his mistakes and corrects them with an apology and positive action. She will appreciate you for your sensitivity, your intelligence and the hard work you to put into her and your relationship. Most importantly, she will thank your 1st wife for training and preparing you for the next phase of emasculation.
Remember: 60% of all marriages end in divorce.
As for the other 40%: 5% stay together for the kids. 5% stay together because the woman has effectively removed every bit of self-confidence the man ever had and tricked him into believing he's happy and couldn't possibly do any better and 30% stay together because the man didn't get a prenup and is scared out of his mind to lose everything earned in life that he managed to save and not blow on alcohol and lap dances.
Here's to a great life for you both together. Enjoy each other and the miracle of holy matrimony!
Mazeltov!