"I just....I know. It's just that Tikki, my kwami, she kept saying to keep it secret. But I doubt I'll be back here after this, and I'm not here for long, but I can at least try help while I am here. And....er, no. I might know some basic words or phrases but I'm not that great with Japanese."

That was probably something to do with the kwami, the Chara? She guesses. Ladybug gives a shrug at that. She doesn't stay transformed for long though, after having revealed it, not seeing the need to stay transformed if she didn't need to, once they knew. So she tells Tikki to detransform her and that the kwami could say hi if she wanted.