Sirona, while I appreciate that you don't want to give your mum a heart attack, I do believe that honesty with ourselves is the most important step we take in becoming emotionally healthy and autonomous people. Honesty with ourselves requires that we be honest with others about our true feelings and beliefs, etc. Obviously, you are on your own, and have your own life. Moms need to acknowledge that their babies have grown and flown the nest and are responsible for their own decisions in life. So, I have set my mom down, and told my mom something like this: "mom, you know that I'm a grown woman, and I'm on my own, supporting myself and doing very well. You know that I've left the JW's and I have found something that makes ME (strong emphasis on that) very comfortable. I know that you will not agree with my choice, but I do hope you will accord me the respect and the right to choose my own path, now that I am a woman." Then tell her. Let her freak or whatever. If you see she is calming down, then you can try to allay her fears about your choice. If she isn't then just say that you are sorry this upsets her, but, you are very happy with your choice, and that you love her very much. Hopefully, if she leaves upset, she will then go home and think thru what you said and come to acknowledge your right to have your own belief system. It may take awhile, but, as time goes on and she sees that her daughter doesn't exhibit demonistic tendencies or freaky things aren't happening and she is happy, then she will calm down. I had to do something similar with my mom, when I started reading native american literature and began practicing their belief system..........I also began collecting tarot cards and I guess I'm very blessed that my mom has the ability to step back from her JW beliefs, even tho she does still worry at times................hope this helps................you just need to give yourself permission to be a person in your own right, not a drone or attached to mom's apron strings of thinking, etc. for the rest of your life.
Terri