She is postulating that the comet will take a different path than the models. She is also saying there is a conspiracy to hide the fact with fake data. It is possible that it will send some meteors our way. It is possible that the scientists are hiding it but what is the evidence that these things are happening. She combines an argument from ignorance with a conspiracy theory, classic kook territory.
Of course given the honesty of our current government we'd have no reason to ever suspect they'd outright lie to us to protect us from our happy little lives. /sarc
Quit being reasonable.