Traumatic experience either forge or break you ...
I dont find anything wrong with second option.
After all as Karlach said: Most souls in Avernus is just meat for grinder.
Also feel free to corect me but wasnt the city elevated back to surface eventualy?
I mean some civians could stay hidden through whole event.
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As for the cat ... im sure Githyanki have their own word for the creature.
I mean would you know what "kočka" is?
I can give you also a hint just as that Tiefling do: It have fur, paws, and we call it by saying: chi chi chi.
Or it can just seem like a cat but actually:
