It seems they are from Czech Republic.
No, she said "Da" when answering yes to something. Not russian but something similar. The word for yes in CZ is "Ano". And they don´t speak czech, I would have recognized it as I lived in Prague for a while and actually studied czech a bit.
I think they're Bulgarian but could be wrong it could be another country that uses Cyrillic alphabet like Moldovan.
I saw Cyrillic alphabet subtiltes on this laptop.