The police make an arrest based upon probable cause to believe that a crime has occurred and that the suspect has committed the crime. It does NOT mean that the crime did, in fact, occur, only that there is sufficient probable cause to believe it did. The charge does not exist to justify the arrest, the arrest was made because there was good cause to make the charge.
You must take into heavy consideration the fact that Police are required to make an arrest if someone claims a domestic violence incident. If they must make an arrest they must be able to justify it and they will regardless of the reality or truthfulness of either party. Do you see the problem now? If "probably cause" doesn't exist then they will make it exist.
In this instance the charges seem to fit the offense alleged. None of us can say whether the DA will pursue it or whether a jury will convict if it is pursued. But, a domestic violence related incident seems to have occurred and the elements of the law have been broken.
You're entitled to your opinion. Now convince 11 other Jurors that a crime had taken place that night without any evidence of domestic violence other than a loud arguement and a broken chair.
If one gets so angry that he starts breaking chairs, there IS a problem there! That is some serious anger. Shall I walk you through the process of escalating violence in the cycle of DV?
Is there a video of her husband breaking the chair or throwing it at anyone?
Did her husband admit to any wrong doing?
Would the fact that he was under the influence affect the validity of his testimony? Due to the psychological strain, emotional intensity, and influence of alcohol; could he have admitted to comitting a crime that never actually occured. Note that some people do confess to crimes they never truly committed out of some emotional or psychological struggle.
Was the OP under the influence as well and if so couldn't that also affect the validity of her own testimony? Especially if she was upset and frustrated with her husband. False or unclear and clouded accusations do occur. Thankfully we have a court system that allows defendants, plaintiffs, and victims to come forward with much clearer evidences and testimony.
The OP's original question was primarily concerning being subpoenaed to court: "I know I have to go - but do I have to say anything?" The answer to that is, "Yes!"
I'm sure she appreciates all of our input. It is also good to discuss an issue in its entirety rather than pick one little piece of it and call it a closed case.
As Ohio does not apparently allow a DV suspect or victim to hide behind spousal privilege, she does not have a choice.
She doesn't need to hide or be intimidated by you, or the DA, or her husband. If there truly is a problem she certainly knows how to handle it and can cooperate with the DA. It is extremely important that she does fully cooperate with the DA no matter what. Because if there truly was not a crime then her cooperation and testimony will provide over whelming evidence that there was no real crime committed by either party.