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Just thinking that although this sounds a like a whacko plan, it actually makes it all make sense. It explains the MFHP. She wanted to keep Kyron, but not Kaine, in a divorce Kaine would have custody. It explains the abduction and hiding of Kyron. It explains her friends wanting to help. It explains DY saying she believes Kyron is "stashed". It explains why she wanted everyone to believe Kyron was abducted by the MMC.
What am I missing?
It's a plausible scenario but for me the problem is that once she becomes the prime suspect, media-spotlight, public enemy #1, she would have to realize that she could never just fade into the sunset for a new quiet life where she could be reunited with him. Once she realizes this she would be cutting a deal to salvage what she could of any life at all. We've seen no sign of that.