1. Her literal materialization in somebody's home. Actually, that it was inside somebody's home and not over the middle of the ocean is sufficiently improbable-given-randomness to be worth noting itself.
2. The home contained two males in a couple, something far more frequent here than in dath ilan; it would later be claimed to her that sexual attraction on Earth doesn't go by reproductive potential of couplings at all, in defiance of the evolutionary equilibria that are supposed to be where biology and biological cognition originally come from.
3. Thellim tried to speak a different language to show that she was from outside their world; which didn't work, in retrospect, according to later info, because Earth had more than one widely used language; the first of many, many cases of Earth being way off the multiagent-optimal boundary despite all the theorems showing that shouldn't happen for intelligent agents in general.
4. Thellim was contacted by a voice in her head, because Brian and Jackson would have contacted Isabella later, and Isabella is a precog...
Thellim is starting to notice an isomorphism between the set "anomalous events" and the set "all events since landing on Earth".