I know we all like to headcanon Nathalie as a pseudo-mom for Adrien, but on rewatching the series, she’s kind of terrible.
-her last name, Sancoeur, literally means “Heartless”, and we all know how names have serious meanings in this show
-She knows Gabriel is Hawkmoth and is just. totally cool with that.
-She defers to Gabriel over Adrien’s needs most of the time. She has her moments but she’s not allowing him much freedom. Just enough to keep him satisfied. Prisoners with some privileges are much more compliant, but are still prisoners.
-She literally fucking stole a birthday gift that a 13 year old girl poured her heart into, because she forgot Adrien’s birthday. it’s been fairly well established that adults who forget birthdays are not generally good people–like Chloe’s mom or Gabriel (except Gabriel actually did remember and reminded Nathalie)
In short, Nathalie is not a worthwhile parental figure. I wouldn’t be surprised if Adrien loves her anyways since she outwardly shows more care than his father does. But if you’re going to be talking about one of the staff being a better parent to Adrien? It’s the Gorilla. He genuinely cares for Adrien and doesn’t get enough love from this fandom.