You obviously understand the danger of ingesting liquid nitrogen but evidently not this 18-year-old girl. Still, I question why the bar she was in would even serve up this kind of drink? Why didn’t other patrons of this bar have a similar experience? I have a feeling that there is more to this story that we haven’t been told.
There is probably a certain amount of time you are supposed to wait before you drink the drink. The nitrogen is most likely meant to chill the drink into a slush and if you take it in before its done then you freeze your stomach. Or it might have been a numbers game where you ingest 2 or 3 of these drinks and you are OK, but 6 causes damage.