It is true that many women 'choose' to continue in abusive relationships, and that control can still be exercised while a man is locked up in prison. I've seen it happen. However, again I believe this is because there is inadequate support for abused women.
As a society we talk the talk about why it's right to end abusive relationships - damaging the children, setting poor relationship models, history repeating itself etc. But the reality for women who do end it, is very very different. They are applauded for their brave and difficult decision and then pretty much cast to the wind:
Very little ability to remove the man from the house permanently and effectively. No where to go, except a refuge full of other abused women, some of whom will be so badly traumatised that they are a risk to others themselves. No financial support able to kick in sometimes for weeks. Talk of benefit scrounger single mothers living off the state and how children rom 'broken' families have such terrible outcomes in life. Charges brought in for those attempting to use the CSA and no legal aid for family law unless you can prove DV (which as most women tolerate approx 35 instances before involving the police, is as good as removing legal aid full stop).
Leaving an abusive relationship is one of the most singularly traumatic events any woman can go through, and it is only just beginning when she leaves. There follows months of upheaval financially and sorting out living arrangements, new schools, etc, all the while trying to recover emotionally without having any of the practical stability needed to aid emotional recovery.
Contrast this with what happens when the relationship was still on - no SS involvement, accommodation/financial security (of a sort, even if she had no control over it), periods where the man is making up for his last outburst and being the 'perfect' partner/husband. If you're going to sleep worried about how on earth you're going to cope, more stressed out than at any time in your life, it is human nature to remember that your XP 'only' lost his temper about once a month and was ok most of the time and every relationship has its ups and downs, right? He's a good dad and the children shouldn't grow up without a father. When said XP then turns up with flowers promising he's learned his lesson and things will be different in the future, is it any surprise that the path of least resistance is chosen?
Leaving an abusive relationship with no independent financial means and no active support network sucks. It IS harder than staying and it is WRONG to judge women for doing it when the person who should be judged (and isn't) is the violent offender.
Why put women through this when it would be quite simple to ensure that these men cannot badger women into taking them back. Make it automatic that a man who has committed a violent offence against a woman receives an injunction against going anywhere near her and is given an electronic tag to enforce it (since most violent men completely ignore injunctions). This would mean he was arrested before he could perform another act of violence or sweet talk the woman back into his life and could mean that more women could stay in the family home without having to flee to a refuge. Stop courts awarding unsupervised child contact to violent offenders. Men who beat women are also child abusers. SS recognise this, as does the NSPCC (DV features in 75% of households where child abuse takes place). Why don't the courts?
Remove the opportunities for a man to harass a woman even after separation and you reduce the chances of her going back. At the moment, the woman is practically forced by law to maintain contact with her abuser if they have children together, made worse by heaps of pressure from society, media, politicians and well-meaning family and friends about not breaking up the family, etc. Spend some of the money that is currently wasted on anger management courses for abusers on the women - teaching them about traumatic bonding (the reason they are often unable to switch off the bond with their abuser) and red flags (so they can avoid the same problems in the future).
I agree prison doesn't work. It doesn't work for most crimes TBH. However, while rehabilitation is arguably the main purpose of our criminal justice system, another is that justice is seen to be done and protects the public. That's where prison has a useful role to play. Where people are incapable of being rehabilitated (and less than 5% of abusers stop abusing) then they should be locked up to send an unequivocal message that abuse is wrong and will not be tolerated. At the present time, most abusers could expect a longer sentence for theft than for beating up their partner. What message does that send about violence towards women? As a society it is well tolerated (despite the rhetoric) because it comes from a historical position where women were property and men had the right to use force to keep them under control. Only 20 years ago this viewpoint of women as men's property was still being enforced before rape within marriage was made illegal. We have a long way to go.
Sorry for long post.