Casting JonBenet

I will never not be fascinated by the JonBenet Ramsey case. I remember it vividly because she was my age, so that was terrifying to hear as a kid... Then I read the Ramseys' The Death of Innocence when I was 10 or 11... which, now looking back, is so dark tbh and why did my parents let me do that??? This movie is very much about the mental workings of the whodunit rather than the answer itself. (I'm sure the Kate Plays Christine comparisons have been made?)