Yes, I do not think abuse justifies divorce. I don't even think adultery justifies divorce. I believe in the permanency of marriage.
But if you believe it justifies divorce or not only applies to one person... You. Your belief that it does not means nothing when it comes to her choice to file.
Her choice to file and what does and doesn't justify divorce is obviously different.
I know there are several views on marriage...
1 - divorce is ok for adultery or abandonment by the non-believer (probably the majority view in evangelical Christianity)
2 - divorce is ok for adultery, abandonment by non-believer, or physical abuse (held by lots of evangelicals too).
3 - divorce is ok for adultery, abandonment by believer/nonbeliever, or any kind of abuse. This is newer and is gaining traction. This is also the view probably held by the rest of the world.
4 - divorce is never ok unless the marriage was illegitimate in the first place (between homoexuals or incestuous marriages).
You know, I think there are a lot of assumptions here... What certain groups believe, what the world believes, how much of what you think who believes, etc etc. In the end, it just doesn't matter. In this situation, what matters is that you are in a situation where your negative behavior directly contributed to the demise of the marriage that you ex is filing for. Determining the legitimacy of it... It. Doesn't. Matter. She feels she's justified and thus, she's filed.
A lot of the discussions are heated because of these differing views. Remarriage is a whole different issue. Some people say it's the same thing as divorce. However, I know my wife and I both believe that divorce is not the same thing as validity for remarriage.
When I got married, my husband and I said we'd never get a divorce. We couldn't understand what would happen to lead a couple to a point where they'd want to give up on a marriage and we swore up and down that we were forever. 5 years later, as we were getting divorced, we swore up and down we'd never remarry. It wasn't out of loyalty to each other... Neither of us had the energy for marriage and finding it to be a profoundly negative experience, we didn't want to repeat it. Our divorce was fast, painless, and we parted on good terms, though with a clear understanding that neither of us were marriage people.
Eventually, I started dating a close friend who was about to go through a train-wreck of a divorce after ending his train-wreck of a marriage. A marriage filled with everything from financial deceit to physical abuse, mental and emotional manipulation... The whole 9 yards. He swore up and down that he'd never, ever remarry. He had no interest in repeating a divorce and saw nothing positive out of marriage. In fact, our mutual agreement to never get married is a common and early bond we shared... We had an immense amount of comfort in knowing we'd never have to deal with "that issue" with a partner because we were both on the same page. And his ex wife? She swore up and down eternal and heartfelt devotion to the man she was joined with, she pledged to always be there for him, always leave her home open to him, and allow God to bring him back... Because she believed with wild passion and fervency that God would bring him back. He'd regret everything and, poof, there he'd be and life could continue as normal.
My divorce went through late October (years and years and years ago). By November, my ex-husband was dating. By December, he was engaged. By March, he and his fiancee were expecting (after saying during our marriage that he didn't want to be a father but would "maybe" do it if it was important to me). By August, less than a year later, he was remarried. Now he's got his wife, by all accounts they're fantastically happy and in love, they've got three kids, all boys, (and I think one on the way) and one of them is even named with a name that, when I suggested it, I was told was "ugly" and sounded like "a beer" or a "bad actor." And he's a devoted family man and father, even giving up on a long-held dream that he had in our marriage, that led to an insane amount of friction for us, so that he could be always close to his wife and kids.
The friend that I started dating, we were living together by January, very happy and in love, a year after my divorce I found out I was pregnant, in the following June our son was born, and sometime between then and the September after our son was born, we'd both changed our mind on remarriage and he proposed. Less than 48 hours after his divorce came through, we got married.
3 people who swore, up and down, they'd never, ever get married again.
Even his ex, who swore (and still does swear) up and down she'd always be true, would never give up on him, would pray for his return daily... She keeps up that show for an audience (namely, her parents and his parents who give her money to offset the financial pain of my husband's "abandoning" her, and that support would dry up quickly if they thought she was dating), but behind the scenes, she's been in 4 sexual relationships (that we know of) and goes out to the local dives to cruise for guys on the regular.
The point being your belief your ex will not remarry, it rings more of wishful thinking (for you) and the leftover bad taste of an abusive marriage (for her). If she meets somebody, if she wants to pursue a relationship, you better believe she'll go back to the Bible to find the justification to re-marry, and she'll find it. Just like I believe in the light of the current situation, your pledging to be devoted to a woman you clearly think can/will/should come back is reflective of the fact that you think she can/will/should come back. Considering you have no kids, after she gets the divorce one can reasonably expect that you will not see and hear from her ever again, a fact you aren't absorbing. When that happens, the situation has subsided, and you see life goes on without her, we will find that you'll most likely move on.
I believe in either #1 or #4. I think most everyone here believes in #3. My wife was a #2 and is looking for Biblical support for #3.
Because I believe in either #1 or #4, I believe that it's God that put us together, not the state. And so if our legal status is dissolved, we are still a one flesh relationship.
Which you will believe passionately, until the scenario I described above plays out. And the reasons behind the divorce, the abuse and possessiveness, are showing themselves in this symptom of how you interpret your marriage.
But this does not mean that I am excused from my behavior. I know I need to resolve issues and work on myself, outside of the marriage. I even told my wife after being apart for 1 month, do not take me back right now because my abusive tendencies are still there and I need time to get these deeply entrenched attitudes out of me by the work of the H.S. and prayer.
You say this, but you're not asking questions on how to improve yourself... You're seeking council on how you can get her back and if you should let her go because you don't want her to go. I've yet to see you acknowledge that, for her, you left the marriage a long, long time ago through your abuse and she's just making legal the dissolution that occurred because of your violation of your vows.