Top Ender Giggles - Different languages

Top Ender was walking next to me in town, both of us enjoying the sunshine.

"Mummy?" she asked pausing before taking a breath and then spilling out "If the language that we spoke wasn't this language and then I made up a word in the language that we don't speak now but did speak then do you think that the word I made up might be from this language that we speak now, but wouldn't speak then?"

I wanted to answer in just one word in contrast to her sudden pouring out of words but instead I said;

"Well Top Ender, you are really smart so I think that you would be able to make up the entire language that we speak now but wouldn't speak then."

She seemed happy with that.