The man's derogatory comments did not get much of a reaction out of Vivienne, as those who knew her already could have expected. Someone who does not feel emotions cannot be angry after all. Rather than asking the man to drop his hostility, she instead somehow tried to placate Prushka, who was jumping at Vivienne's defense.
"... I never learnt how to draw... so it's okay..."
This must have been the first time someone wasn't being considerate and calling her drawings out for what they were. Perhaps a more 'natural' comment that Vivienne would have gotten from people who weren't as supportive as the circle of 'friends' she had made so far during her journey at road's end.
Even so, Vivienne gives a little wave to the man before saying:
"... Nice to meet you... mister Ahti... I once considered... becoming a comedian... but I am bad a jokes... "
The emotionless girl pauses for a while, cusping her chin as she ponders on something... that something becomes quite obvious once she speaks:
"... the jury is out on our trustworthiness... but you certainly have an in jury...."
... hello? Is this Vivienne Bianchi speaking?