I cannot tell you on a psychic level what’s happening. I was married to a woman for 15 years that showed the same characteristics. She had borderline personality disorder/ manic depression/ and seizures . The meds take awhile to get in the system but will not take all the craziness away. As with you she thought I was the devil. Then would tell everyone I was the most amazing man in the world. It’s just one of those things you will have to have patience with. It’s a hard life but can be done. They tend to bring on another persona when they feel threatened or as if they are in trouble. Often she would tell me something and at another time would swear she had never said it or would go somewhere I know she had been and swear she has never been there. I hope this helps you with what yo expect. Good luck!