Tickets for burning man go on sale 6 months before, cost $1000 and become sold out in 30 minutes. It's a festival in the middle of the desert that you have to go pretty prepared if you want to last more than half a day (coolers, water, van, etc).
How did someone find tickets for 2 people a week before, drove to the desert with their mother because they honestly thought it was an interview test.
EDIT: Maybe she was going to be at burning man with her mom eitherway. She just decided to get some more business oriented clothes for when she would hang with her new work mates. That makes sense. But now it makes zero sense for the article to mention the burning man story.