Ranchette,
I find it disturbing that some of the other posters take the letter which your Mom sent to you and almost chide her love as hate. While we might disagree with the content we know that she is just living in accord with her beliefs. These beliefs, as we know, are based on fear and she is expressing this fear. She firmly believes that you are now "condemned" in accord with what she has been conditioned to believe.
This does NOT minimize her love. When a mother shows love it is the most precious emotion in the whole world. Please try to see that due to her misguided belief system she is also a victim - her fear of you experiencing hurt is causing distress to her. The fact that she can write you about it shows her love to you. she is not trying to hurt you - she is trying to protect someone she loves from the things she fears.
All you can do is reciprocate the love, while continuing in mild ways to help her see her fears are not based on reality. If you push her away or treat her as some posters would have you do then she will just be hurt even more. She is not evil, she is mislead. She is acting as any loving mother does. Continue to reciprocate the love and continue to do your part in helping her to become free from the evil organization controlling her beliefs.