So, Nat's engagement to Rook Tony Stark is about be announced and splashed all over social media. Celebrity wedding coming up! That might make Margo more inclined to rub elbows with her? Or, yeah, she can like the idea of talking to a victor. Even though Nat hates talking about her time in the Quarry.

Or it could totally be condescending hang-outs at parties with Margo looking down on Nat. (Margo likely remembers just recently when Nat was lowly Carrion.) Potentially developing into more as they are forced into each other more often? Or not. It could also just be negative CR.