Ah...so-sorry, it's uh...force of habit, I guess? [Or just a cultural thing. But, she will at least address Yang with a little more familiarity. Though calling her just by her given name is not going to be a thing, sadly...since it's a big ol' no-no in her culture unless people are really familiar, or related to one another.]

Ah. Yang-chan...is that alright? Mmh, I'm not very comfortable calling people by their first names without and honorific... It, um...it's not common practice where I'm from. [She knows it's different in other countries but. Yeah. Habits are hard to break.]