I have been watching the drama video. I can understand Russian quite well but not so much that language they speak (it is another slavic language, i think it is Bulgarian or Macedonian). But some words are the same as Russian. From what i got, Suzan was mad because Hector got home quite drunk, with his brother. I don't know if the Hector's brother is actually the "guest" (he was watching the scene from the door at the start of the dram and ran way when things became ugly) - but i guess so, because she was screaming "had enough of your brother!". I couldn't understood the rest of the conversation because they started talking quiet fast and screaming in that peculiar language.