Guinaifen notices the careful enunciation, and can't help but- see, there's a certain irony. Here she is, having adopted a new name - Guinaifen - in part to make it easier to assimilate onto the Xianzhou Luofu and make it easier to start a new life there. Untold well meaning aunties and uncles stumbling over her real name, Guenevere. People trying to pronounce it as carefully as Dimitri just handled Guinaifen.

...it would be really awkward to offer Guenevere after he made the effort, though...

...well, anyway.

"I'm new here too." She says this like it's a secret, grabbing Dimitri's hand and just tugging him out of the creepy light-infested room of visions, look, momentum is salvation, they can worry later, at leisure. "I think I saw a cafe? Or we could just walk around a bit. Promise me you'll shake me if I start staring off into nothing again, though."