I'm definitely all for developing the culture clash angle. From Eshalu's perspective, the natural state of elves (or, for her, 'the People') is in the forest, though Mountain Elves (which seem to be in the high elven style) probably have a different view. From a linguistic standpoint, I've assumed that each understand the native tongue of the other, though this is a handwave on my part since Reliyian would likely understand wood elven from study or interacting with wood elven travelers, while Eshalu until recently found the idea of elves living in a city preposterous and linguistics is not really her strong point. In the same way, I could see Reliyian opening Eshalu's horizons on the diversity of elven cultures and their survival strategies and Eshalu, in turn, is a reminder (perhaps sometimes unwelcome to Reliyian) of a wild and often violent past.