They speak in a perfectly normal Taldane, also known in the Inner Sea region as Common. To anyone from Andoran, they don't even appear to have a foreign accent.

"I am Eliza Haniver... yes, from the colony. And this is Rayland." - she points at the man - "We, uhm, just stay here. We were forbidden to leave. Uhm, I don't know any of you. Was there a second ship?" She seems somewhat uneasy, with an eye on Henri and Lightburn whispering among themselves and on Lightburn in general.

Spoiler: Lightburn and Henri
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The people definitely smell funny. Lightburn never smelled a thing of the sort. Definitely not normal humans, but he would not call them totally not humans either. And, he assures Henri, it's not just the smell of the stockfish, both eaten and not, that is present around.