So based on her understanding of what you said, she was actually right to object.
I guess the lesson here is that we must learn not to skip steps in the explanation of unconventional ideas because there is a risk that people will be opposed to things that aren’t even part of the proposal, and there is a further risk that we won’t notice that’s what is going on (in your case, you noticed it and corrected the situation, but what if there had been a huge fight and the subject had never been brought up again? That would have been a sad reason not to sign up for cryonics...).
So based on her understanding of what you said, she was actually right to object.
I guess the lesson here is that we must learn not to skip steps in the explanation of unconventional ideas because there is a risk that people will be opposed to things that aren’t even part of the proposal, and there is a further risk that we won’t notice that’s what is going on (in your case, you noticed it and corrected the situation, but what if there had been a huge fight and the subject had never been brought up again? That would have been a sad reason not to sign up for cryonics...).