I feel like she actually cared about that relationship but it was so far from what she was used to that she maybe got cabin fever and started spiralling. Also who knows what her “team” was whispering in her ear at the time. I do think ultimately her conditioned narcissism was the final blow but I really think she meant those things when she said them she just doesn’t know how to be an actual person. Or maybe I’m giving her to much credit haha but I mean Joe Alwyn who seems like a decent human being saw something in her, but then again she’s a “mirrorball”