Responses
I think she saw Aria as a daughter or something like that and she is scared that if Aria fall in love she will forget her, you know kind of like an overprotective mom ? And we can see in the recent chapter that they are not meeting as much as they used to, and she is just scared that Aria will abandon her. (This is my point of view I understand if you don’t agree with me I don’t want to offend anyone also sorry if I’ve made mistakes English is not my birth language)
Oh my gosh, Lady Sarah was saying she was jealous that someone had stolen Aria's attention... How is no one talking about this?! I don't know if I read her expression properly, but it looked like she might, just might, think of Aria as more than just a friend...