Fighting a False Charge of Family Violence
Unfortunately, you cannot rely on your spouse to do the right thing and try to stop the bogus charges of family violence assault from being filed on you. Even if they are willing to go to the police or prosecutors and admit that the charges are false, they will often find these people unwilling to listen after charges are filed.
Call a lawyer immediately. You have already seen that the police cannot be trusted to do the right thing.
A lawyer can help advise you on what steps to take to prevent this charge from resulting in a conviction which could deny your right to carry a firearm or lead to your children being taken away.
The longer you wait the more difficult it may become to protect yourself from these false claims.