Why dosen't the state procecute woman beaters?

It is an unfortunate element present in so many abusive relatiionship where the person being abused often feels that they in some way have brought the abuse on themselves or deserve it in some way. This often leads them to choose not to pursue the option of pressing or supporting charges against the abuser, or to all too willingly accept and believe apologies from the abusive partner. Often over and over again. Of course sometimes instances of abuse actually are one time incidences and sometimes both partners are even somewhat equally responsible for creating the circumstances surrounding the event. This does not excuse it of course. But it does happen sometimes that after both parties recognize, admit and effectively deal with the situation and the contributing factors. It actually never does re-occur. However that is a far more rare scenario than the more common ongoing cycle of violence that such an occurance signifies.
In my state it is common for the police to charge an accused individual (male and female) independently of the victim when they feel there is sufficient evidence for them to do so. Medical facilities here routinely remit examination results collected in ER departments to authorities if they feel they have reasonable grounds for suspicion of abuse. Which the authorities can and often do pursue independently. It is a practice which is frequently condemed however as it obviously often creates an environment favorable to overzealous officials with personal axes to grind or who are basicly focused on building reputations. Often to the detriment of individuals who lack the resources to defend themselves adequately. However the practice does often rescue abuse victims from situations that they would not likely have gotten out of on their own otherwise.