At this time. Hm. That still isn't reassurance. Perhaps he needs to phrase this in a way that might allow for them to think twice before trying to undo anything.

"I was concerned that you may attempt to undo what has been done. I have reason to remain on the train for the time being, I did not want my being taken without consent to change that yet, not without my consent again," give him a choice.

"As for your previous questions, my world is unaware of being a part of a system and the void as you refer to is unknown to us."