>>19782940The other gal was TJPW, not Stardom, both companies were there
They had shows in the area. Even if they don't necessarily care about WWE, Wrestlemania does draw the biggest number of wrestling fans to a single area at one time, making it a prime place for smaller companies to put on shows in order to broaden their fanbase and make a few bucks.
And of course they're going to go to Wrestlemania while they're there.
It's the same reason TJPW put on a Dallas show the same time as All-In - All-In isn't quite a big but there were more people than usual in the area looking to watch some wrestling.