This would explain the reason to make the letter so long (so this info is buried).
I really don't believe there was a deliberate attempt to make it long. I believe Patsy simply had no idea what to write or what kind of language to use. She was upper crust and had likely only ever associated with upper crust people. What would a low life criminal sound like or say? She had no clue, so she simply used movie references. The note is just the product of what she could pull out of her head during that stressful time.
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