Mignonne = cute & aimée = Beloved it's french btw, we don't have the context with so many missing chapter, that i guess she is working in France somehow !?
edit : We are missing 6 chapter and the relationship didn't moved from an inch ?
I love Yuri, i enjoyed the setting, but it's seems ( yeah not sure with so may missing chapter ) that it's more comedy than romance ( using the only setting "being best friend & lover" supposed to be funny enough somehow ).
It's lacking to me, will still read because it's Yuri cough if we ever get the missing chapters tho.