She's said a number of odd things about his place. I don't remember the quotes verbatim, but it was mentions of people living next door or below/above, hesitations when describing his good friend that was a like neighbor but not. (She may have alluded to him living very close to his ex that he's good friends with, but don't quote me on that.) She made it clear that he wasn't living in a standard house. I figured he lived in an apartment due to these weird comments and hesitations, but it didn't quite fit. It makes perfect sense that it's a triplex instead.
I think this is the third time now that she's made a reference to Nader feeling ill, but it not being an everyday sort of sick. She's said it isn't contagious, that it wasn't the sort of thing she could catch, called it a migraine, said she gave him edibles because he was nauseous and had trouble sleeping, She said she made him feel good by feeding him well the first day it happened when she made the big show of going over to take care of him, which supports that it's not an illness that would make you lose your appetite. She said numerous times that it "wasn't that kind of sick". I don't think she'd be so brazen about talking about drug withdrawal - which is what some people have offered as an explanation - but what about hangovers? Hangovers are the only thing I can imagine fitting in with all of these comments. She's alluded several times to him "always" drinking wine when she's over there too. I think Nader being an alcoholic is a good possibility and offers an explanation for their disagreements and the regular bouts of zero communication from him. I suppose it's also possible that he is actually addicted/withdrawing and offers "hangovers" as the reason to stupid Chinny.
Finally, in the Twisty Misty live she said that she was headed back over there because they "had to talk". She also said that she expected him to be sleeping when she arrived, but that he normally leaves the door open and likes when she just enters while he's asleep. (Only Chantal would make a declaration like this literally the same day she led people directly to his house.) She noted that he would be busy without her this weekend.