I'm in Mexico and I've no way to be there for her
But you obviously have access to the internet, why didn't you just use that to look up the address for the Polish embassy ?
I never been to an embassy, so no idea what they do and don't do, but would assume it's who you would turn to if you got arrested or something pretty serious was happening.
Her problem is mainly she (and her friend) got scared when their cellphones stopped working.
Sounds like they're just having a few problems adjusting to their new situation and maybe didn't do enough research before they came.
Not sure what the embassy would do other than tell them to calm down and to stop being so dramatic.