The best answer I have read so far was aries2756 although I also like and agree with AidleMaidle.
In my experience and opinion the reason the divorce rate is high in general and also particularly even higher before/in Tishrei is all due to the fact that the Yetzer Hara becomes very strong in this time, not to mention He is strong in this Dor.
Ribbono Shel olam is about to dish out all decrees and blessings for the upcoming year and the Yetzer Hara is doing all he can to see that we mess it up.
He sees all the yidden and married couples who are normally maybe good friends, living as righteous role models, leaders of the family and home and so he is determined to murder them. It can start over something stupid, (the argument). Then it escalates to threats of “get out” “i want a divorce”. So, it all comes down to nothing more than working and improving ourselves and davening for help.
I strongly suggest each and every woman read “WOmen’s Wisdom” by Rav Shalom Arush. (and no I am not a breslover chasid) But it really touches on all those points in which women have to face challenges and rise up to our higher calling with strength and courage. I also recommend Men read “The Garden of Peace” which is the man’s equivalent from the same author.
In short, the divorce crisis is about fighting our common enemy. The Evil Inclination who blinds us from forgiveness, bitachon, our partner’s good qualities and love. And its like he is whispering in our ears all the shallow and fearful insecurities we don’t want to hear, to paint a bleak picture of life and reality. But we have one weapon. 1) We CAN fight back and 2) Davening, Tehilim, etc. In short, we have bechira and can fight back.