An uncle of hers owned several companies in Australia and in fact illegally left PRL in the 1950s to continue his bourgeois life in Australia. She claims they were watched closely by the police for their family history.

In that case this is actually possible, though not necessary, families of gusanos were often used by foreign agencies, but there were quite many of them so probably that uncle really did something along those lines?

She also claims she wanted to study medicine at university but wasnt allowed again for her family history

Honestly no idea, never heard about such things explicitly. If her family was bourgeoisie it could be the reason since universities did enforced positive discrimination - so called “points for origin”, where candidates from peasants and workers, and also those from remote backward places had easier to enter the university and those from intelligence and bourgeoisie had it harder (and that worked since PRL had huge achievements in education). Or maybe she just did not passed because very mundane reasons and now blame it on socialism, i know a lot of those people too. Who knows now.

She worked as a worker in a butter factory, which she says was very mismanaged, with most people spending half of their workday doing nothing.

This did happen because full employnment policy although half day is great exaggeration unless strikes halted supply. Still better than giving one worker the labour of three to do. And it was not mismanagement, anyone who says that do not have any knowledge about mass worker management. They either operate under capitalist mindset of exploitation (or maybe are fash expecting state to form mobile labour batalions… for what exactly?).

Although again im not sure how reliable any of this information is since another time she told me that “in PRL, if you made an anticommunist joke you would be disappeared to Siberia”

Probably this reliable, meaning zero. I could read few articles too and give a very detailed record of how i was arrrested by police for telling joke about wałęsa. Oh, but at least one homeless guy was arrested in Poland for lese majeste of president Kaczyński.

Did you live through PRL?

I was stupid and ignorant teenager when the PRL was destroyed. As Parenti said: i never appreciated what i had.