You didn't mention if you were active witnesses. I'm guessing not? Otherwise they would presumably know. Also, if you're not, telling the elders is kinda harassment. At least if they came around and bothered her it is.
It seems all rather sudden. If it really played out as you say, I'm sorry. But I only have your side. For all we know you may be abusive, controlling etc etc Please don't get angry for saying it.... it's just my father tells huge sob stories about my mother leaving him to raise two kids...he just forgets to mention the bit about breaking her nose, throwing her out every five minutes and her sleeping in the car etc etc
Taking things at face value I think Stephen LaLiberté said it best. Look back with fondness, try not to be bitter because it will destroy you and try to remain friends. " Jehovah's arrangement" may well be the reason it ended. Husband's being the head is an old fashioned and frankly damaging attitude. It's misogynistic to say the least. Perhaps if the two of you saw it as a partnership - and kept Jehovah out of your marriage bed - you may have still been together. It's a fact JW have the same rate of divorce as secular people, actually in some cases a higher divorce rate.
I wish you the very best. Take care of yourself, maybe get to know yourself without cult influence, ensure you split things fairly and maybe find something you've always wanted to do/experience but couldn't due to commitments. You only live once and if you really love her you'd want her to be happy and she you. Be the bigger person and believe me you will be a winner in the end
Meanwhile, research JWfacts.com.