They did make the playoffs in her two years as a coach and this was their most wins as a franchise since the move to Dallas. So this firing seems unwarranted unless it's either player driven or if they have a big coach upgrade in the works.
It did appear that Arike and VJ didn't see eye to eye at times and players like Charli and Harrison speaking out on social media didn't help her case either. I still think this all goes back to Bibb, he overloads his teams with multiple players with similar skill sets and usually wastes quality talent on the bench. And just like clockwork when players leave Dallas they typically have much better seasons as in the cases of Moriah, Skylar and Azurà.