I understand and I hear you guys. For the record, I am not a believer in conspiracy theories, I am a believer in everyones right to have an opinion of their own. She has a right to hers, no matter what. I agree that her paranoia (or whatever) causing troubles with the state and the police is an issue and she absolutely has a responsibility not to cause that sort of disruption to her son's life. But she does not have a responsibility towards her son regarding keeping her friends or staying this side of the public opinion. A parent is always also a parent, never solely a parent.
The expense her belief causes her is for her to weigh, not us. That holds true no matter whether it refers to political or religious or any other type of belief.