The only way you're going to get the straight facts is to check the pleadings, which we don't have. But it is certainly possible that the prosecutor was trying to protect the victim.
If I had a dollar for every domestic violence victim who refused to press charges and wound up dead . . . they refuse to testify for a lot of different reasons - frequently they are not rational about their situation, or they are afraid of the partner. Sometimes, victims try to extricate themselves from the situation on their own and wind up 'setting the guy off'.
Just because other charges have been made means little. The guy could make bail, then go home and kill the victim because he blamed her for his problems. I've seen it happen.
If I had a dollar for every domestic violence victim who refused to press charges and wound up dead
We’ll see a lot more people putting up signs, “Warning: We don’t call 911” or simply refusing to report crimes at all.
So you believe that it is better for The State to incarcerate you, depriving you of your rights, than for them to not do so?