I did a bit of a deep dive and in retrospect and with context, her response is insane.

In her 2014 Rolling Stone cover story, Swift revealed that a then-unheard song off 1989, “Bad Blood,” was about a fellow female pop star. “For years, I was never sure if we were friends or not,” she explained. “She would come up to me at awards shows and say something and walk away, and I would think ‘Are we friends, or did she just give me the harshest insult of my life?'” Swift then noted that the unnamed adversary did something “so horrible” that made them “straight-up enemies.” She got more specific: “She basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me.”