Well, no, it's not our planet. [Not Earth and not... well, not wherever Galaxia is originally from.] But we can still help.

[At the mention of kidnappings and people being controlled by a dark force, Usagi sighed. She's not shocked, but it's never good to hear.]

Well, if darkness exists, then those who provide light are here as well. [She immediately offered, and she wondered for a moment if Galaxia had tried to intervene or not.] If they need my help, they have it. [She smiled.] Besides, we're in this together. We might not be this world's guardian but if we have the power to help, we should do so.