There were apparently fight clubs. That they existed wasn't a surprise to Kitty. That she was keenly intrigued by the idea was. There was an expression of violence within her that needed an outlet. In another time and place, that would take the form of ninjas, evil mutants, soldiers and any number of people who deserved a good beat down.
Overriding that was concern for a friend. Obi had clearly been roped into something, and she knew his sense of chivalry and right versus wrong had been cleverly manipulated. So she was going to be the cheering section, since he deserved one. And she wanted to keep an eye out for foul play. Because then she might have to open a couple of cans of whoop ass.
She got off work, an changed into an old pair of jeans and a tank top, before hopping onto her bike and speeding towards Santa Ana.