My thoughts exactly.
Honestly I don't think people are reading the signs well enough here though. Social anxiety can manifest itself in many ways, and forcing people to "act normal" can be severely detrimental. Sometimes the spotlight pressure can exacerbate otherwise benign symptoms too, so maybe when someone wants to recoil from uncomfortable situations we could just let them and not act like they owe us acknowledgement, a smile, some form of conformance or whatever else people cook up in their heads.
Cat doesn't owe anybody a damn thing. It may very well be a super challenging thing for her to just show up at a tourney, we don't know and she doesn't owe us an explanation either.