Police can't get between a man and his property wife.
Sorry he did that to you Mitchie, and the police responded the way they did.
For the people who think that Sarah is as bad as her attacker - ask yourselves how he got a bite on his inner thigh. Do you really think that she just made a lunge for it and took a chunk out of it when they were standing arguing, or do you think that perhaps she's telling the truth and that he had her pinned to the floor and was smashing her head against it, and that was the only way she could fight back? The bite confirms her story, it doesn't make her look equally culpable.
He also attacked her when she was trying to leave, more classic abuser behaviour.