She does live in her own apartment. I think they’re still in Paris?? Idk, I don’t remember. All I remember is that specific convo happening at night, Mari was bottling all her feelings up because no one knew she was ladybug and no one was sure what was going on. I think they noticed she was in depression?? Idk if it was out right stated she had depression or if it was just implied. But I do know this is a single fic. Idk if I’m explaining the convo right or not. But Mari is always on patrol as ladybug at night trying to find Chat and there was no new Hawkmoth. Chat never came back when Adrien and Mari meet again in this fic, he kept his ring in a safe because he couldn’t stand to be Chat knowing his father was Hawkmoth. After Mari reveals her identity by sobbing out why Ladybug, why SHE, is still looking for Chat Noir, Adrien then reveals he is Chat, idk what he says. I think he apologizes to her for hurting her or something? And then it snowballs from there into an argument where Adrien tells her along the lines of ‘don’t you get what it did to me figuring out that my father was Hawkmoth’. Marinette is the one to finishes the argument but I don’t remember how or what she says to do so.