Orphan crow. I think that are definitions of objective is different, and that is partially my fault. You are using the common definition of someone who has no bias one way or the other. Like an objective observer who doesn't care which side is correct and which side is wrong. Here is one definition of it.
(of a person or their judgment) not influenced by personal feelings or opinions in considering and representing facts.
I don't want to put words in your mouth but that is what it seems like it. But the following the definition of objective that I am using
objective is something that can be quantitatively described.
And I am using this definition for subjective
based on or influenced by personal feelings, tastes, or opinions.
Also when I studied aspects of medicine they use the two terms to indicate things that one feels or sees by their own observation. But objective evidence or data is what can be measured and can be indicated by data. Such as pain is subjective and weight is objective.
So when I said that there would be objective data of an abusive wife, I mean there would be evidence that no matter who observed it, they would come to the same or similar conclusion.
If two people look at a scale one person cannot say that the scale says 200 lbs and the other person says no it says 150. One person would be correct and one person would be wrong. But if one person says that 300 is heavy and the other says it is lite both can be correct based on their prospective.