You are correct in trying to pursue the matter. You DEFINITELY need to speak to the officer's supervisor. If you get nowhere with him/her, then you need to speak to that person's supervisor and go all the way up the line--even if it's to the chief-- until you get relief. Also, you need to take pictures of your injuries and date them.
The statute that you cite in your post doesn't appear to be the appropriate statute for the assault and battery that occurred upon you by Sally. That statute states as follows:
6-6-101. Fighting in public; penalties.
A person commits a misdemeanor punishable by imprisonment for not more than six (6) months, a fine of not more than seven hundred fifty dollars ($750.00), or both, if, by agreement, he fights with one (1) or more persons in public.
As you can see, if BY AGREEMENT the person fights with another in public.
The proper statute(s) based on your post, may be 6-2-501 as follows:
Wyoming Simple Assault Laws
You could be facing this charge if the prosecution has evidence that you unlawfully attempted injury on another person. Yes, you don’t even have to make physical contact to be found guilty of this offense; the intention to cause harm is enough.
Simple assault is a misdemeanor which carries a fine of $750.
Simple Battery Laws
Battery is different from assault in that it does require some kind of contact. You could be found guilty of this offense if you intentionally, knowingly or even recklessly cause bodily injury to another with physical force.
Battery is a misdemeanor as well, though you can be sentenced to up to 6 months in jail along with the $750 fine.
Ref: WY 6-2-501
Unlawful contact is defined as touching another person in a way that is considered rude, insolent, or angry without intentionally using enough force to cause injury, or recklessly causing injury to another. This is another misdemeanor offense and like simple battery, you can face 6 months in jail and a $750 fine for it.
Also, there is another statute that may apply:
6-6-102. Breach of the peace; penalties.
(a) A person commits breach of the peace if he disturbs the peace of a community or its inhabitants by unreasonably loud noise or music or by using threatening, abusive or obscene language or violent actions with knowledge or probable cause to believe he will disturb the peace.
(b) Breach of the peace is a misdemeanor punishable by imprisonment for not more than six (6) months, a fine of not more than seven hundred fifty dollars ($750.00), or both.
Depending upon the circumstances, you could both be charged with that crime. That would be within the discretion of the prosecuting attorney.
Good luck. At least you now know the proper statutes that may be applicable. Also, keep going up the ladder until you get a satisfactory outcome.
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