The freedom to work for a boss that sees her as just another disposable "human resource" instead of working for a family that sees her as it's essential heart.
Speaking to my elderly relatives, a few of the women resented being told they were getting fired as soon as they were married “because [their] husband can do the earning now”.
Modern no-fault divorce laws along with alimony and child support are a pretty comprehensive solution to this problem. And there's no way to legislate against emotional attachment if that's what's keeping a person in an abusive relationship. At that point it's up to his or her friends and family to provide support.