so I was watching the new Piers Morgan documentary about a young girl, who helped set up a robbery for her boyfriend. She was not directly involved in the robbery, wasn't there and didn't know the participants had a gun, yet she was charged with first degree murder and given a life sentence without the possibility of parole in a Florida court. My question is why wasn't she charged with accessory to robbery or something like that.
Because Florida has felony murder laws. If you participate (including being an accessory) in the specified list of felonies (including armed robbery) and a murder is committed in the course of that felony, you are guilt of first degree murder. It is a prerequisite that she would also have been convicted for the robbery.