I have a slightly different take on it. My take is that EB wrote the ransom note...then decided it wouldn't work and the best and most important thing in her list of options was to destroy the evidence. She doused the SUV in gasoline, stuck the ransom note (which she no longer intended on using) with/in/on the SUV and lit a match. Perhaps the gasoline was poured in such a way so that the mulch would catch, and then spread over to the SUV, thereby destroying the evidence, including the ransom note.
However, her plan got screwed when the fire department showed up sooner than she intended, and for whatever reason the SUV hadn't caught fire yet. The fire department found the ransom note, which was never intended to be found, and they've been winging it since then.
Here's my questions for everyone.
If she WANTED the fire department to read the ransom note, then WHY would she have put it in/on an SUV that was doused in gasoline near a fire? Why douse the SUV in gasoline if it wasn't intended to be lit on fire? :waitasec: