Pod person, if I remember correctly, seems to describe her well.
Keep copies of all the emails and a journal of the actions you took as a result of her emails. Send everything to your lawyer. I hope you have a life insurance policy covering her. The air travel, the musical beds and the erratic behavior could add up to disaster.
I wish I had a clever quote to insert here, but I'm not nearly as erudite as you. What the hell: Salvador Dali once said, "The only difference between an lunatic and me is that I'm not crazy." I got that off of a coffee mug.