Why would you go see someone about those statements. If a asteriod hit we could be gone tomorrow. Do you really beleive mankind will survive forever? We are likely just a dot in time.
The horrible earthquake in Chili knocked the earth off its axis a bit, it was that strong. I used to worry about underground nuclear testing. I could not see how the mass of the earth no matter how big it was could stand it and might make it crack. Remember it seemed almost everytime they detonated one within a short time California had another earthquake?
Nothing is unbelieveable in the respects of mankinds survival. I wish I could say that will never happen but look at all the extinct species that have come and gone.
Now what I am worried about is this consistent heat, this is still the end of May, has been right at 100 degrees here for days, it is hot and miserable out there. What is June, July, and August going to bring? They say a busy hurricane season, I'm guessing a disastrous one. I'm out to try and save some more tomatoes for canning as I can see lots of yellow folage out there on everything.
Just have an open mind, explain to her that that is one persons opinion, that no one knows for sure. It's just part of the process of learning and thinking. If we keep saying the school can't teach this and can't teach that, we will have a whole generation of lock step thinkers only. Noone ever went to school and told my teachers they couldn't say stuff, not parents anyway, probably the school board did. Embrace this opportunity for her to question, research and think about a lot of things about the environment, use it as an opportunity to think and learn.