I'm pretty sure, yeah. Entrapta could explain it a lot better.

[Scorpia notices but other than a tiny frown for a half second, she doesn't bring it up.]

Yeah, if someone else had gotten here at the same time, you'd know already! And there's no sense in worrying about home, because time doesn't pass at there really! Me and Catra compared things, and it was maybe an hour? If any time at all, and she was here for a couple months before I got here!