Report DV:

  Though there are sometimes innocent misunderstandings about what one thinks they might have seen or heard; it is almost always a good idea to report events which appear to be Domestic Violence -- and to report them with utmost accuracy and honesty.
  For example, in a recent case where a convicted abuser was sentenced to prison, the fact that someone went ahead and filed such a report of suspected DV made all the difference in the world.
"“Absent (the neighbor’s) call we might not have heard about this event,” Miller reportedly said at Wednesday’s sentencing. “Given this defendant’s propensity to be able to convince others not to report, this too may not have been reported ... so thank you to the concerned neighbor for taking what must have been a difficult step in calling the police.”"
https://www.idahostatesman.com/news/local/crime/article239606503.html