My 02c here is everyone knows the trade off in police interviews in America. David Simon popularised it in his famous book
Homicide and the TV show about murder investigations where it was a running theme of breaking people in the tank. My reason to say this is most every American knows not to talk to police in these situations!
Since Miranda, you have a complete right to silence. And that means you have no real incentive to speak. So police are left with trickery, deception, psychology etc because all suspects should say nothing. In my country, the tradeoff is different. There are advantages to disclosure but LE is required to also disclose. No lying.
AB knows this of course. I agree with her that it's dumb and bad, but it's the rules American courts have decided upon.
Rick should have kept quiet. Instead he said stupid things in 2 interviews which incriminate him. Were the police mean? Sure. Such is life.
Don't talk to police.
MOO