If you participate in a crime, and someone is killed as a result of that crime, you can be charged with murder. Man kills 3 home burglars; woman who aided robbers arrest
That isn’t true in every state, of course, but in the case of a home invasion in Oklahoma, that is what happened. It appears that the woman was supposed to be the getaway driver for the 3 home invaders. They didn’t get away, but were killed by the homeowner’s son.
Oklahoma law allows a person to be charged with murder if they take part in a crime in which people are killed, even if the person does not take part in the slaying.
The Left will complain, because that’s what they do.