Alright. Your mom is definitely more over the edge than my mom. Mine has talked about it as a way of being with loved ones again after she dies. Death is scary. Mom is pretty old. As such, I don’t see the problem here. Peaceful death as a goal, in my mind, isn’t a bad thing. Her conception per how she talks about it includes her though, not the world. What you describe, however, pushes it onto other people. The necessary boundary against religious twisting is lacking. Again, this is a conversation you need to have together.