Chrysalis outright despised the pink puffball, she made this well known during her countless interviews leading up to this match. She also made clear how much she adored going against her. She was quoted in saying: “Once that bell rings, dont expect me to stop swinging until they get Celestia herself to drag me off that bitch.”
Pinkie seemingly didn’t know about this, or didn’t care, as she walked in with a big dopey smile, just happy to be there.