Djana And Rax

If we got used to dealing with non-humanoid intelligent species, how would we respond to them? Djana, a young human prostitute, having received a phone call and gone to the specified address, nearly screams when she sees the being that awaits:

"...a lumpy gray body on four thin legs...the head at its middle about level with her waist."
-Poul Anderson, A Circus Of Hells IN Anderson, Young Flandry (Riverdale, NY, 2010), pp. 193-365 AT Chapter Three, p. 213.

The lower beak buzzes and whistles but the boneless fingers of one tentacle hold a vocalizer, skillfully used to generate Anglic in an ingratiating tone. Djana thinks that sex with xenos is wrong but Rax proposes something else. Since this chapter is narrated from Djana's point of view, it must be she that is able to reason as follows:

"Rax edged closer yet, with an awkwardness that suggested weight on its original planet was significantly lower than Irumclaw's 0.96 g. Did it keep a field generator at home... if it had any concept akin to 'home'?"
-op. cit., p. 214.

Djana also knows that:

the Terran Empire is a globe with a diameter of 400 light years;
the globe contains about four million stars, most with planets;
perhaps half have been visited at least once;
even a single visit might have resulted in casual native recruitment;
a hundred thousand planets have often sporadic contact with the Empire and owe it often nominal allegiance;
so Rax could be from anywhere.

Every installment of the Technic History set during the Imperial period must impart these facts to the reader. Here, we receive them from Djana's reflections on meeting Rax. She cannot interpret his facial expressions.