Number one, I didn't say she would be a sinner. But each person has to decide for themselves if they are serving God or not.
A nurse who cures someone of an illness is serving God. God doesn't say let the guy die, hint the Good Samaritan.
The OT, Moses' Law, lays out the idea that every person should get their day in court. But for me, I couldn't defend someone I knew was a murderer. That's why criminal attorneys will sometimes say they don't want to know if one is guilty or not. They just defend them the best way they can without determining guilt, that's the jury's job.
A blood lust to kill is one thing, doing one's duty to protect is another. A soldier doesn't get to pick and choose where he is sent so the government acknowledges those who are conscientious objectors.
Now tell me one good reason, that is consistent with the Bible, that one should be taking photos that they believe are of a sinful act. How are they serving God or serving society, such as recording history in a war zone, or taking photos of crime scenes for evidence to convict a murderer.....