I'm less worried about embarrassing myself and more about embarrassing her. She's already told me stories about her dad and other guys and I did admit it made me a bit weary. When I ask what I shouldn't do or what could come across as disrespectful in the culture (Bulgarian), she says just be yourself. I'm generally laid back and the way she describes her dad is as a dominant, incredibly straightforward man.

I feel I could make a good impression on the mum as I'm generally pretty respectful, but then how do I know that what I regard as respectful isn't actually seen as offensive.

I think to the scene in the Sopranos where Melody's boyfriend paid for the meal and it pissed off Tony to the highest degree as he felt disrespected.

She said I'm overthinking but anyways advice?

TL;DR - Meeting my girlfriend's Bulgarian parents this week and don't want to do something that could be regarded as a disrespect culturally.