They were on a business trip to DC but were on their own "downtime" when the event took place. The photo was taken by a fellow co-worker. Still doesn't change the key ingredient that she resigned from her position.
I read that Novosel was a regional manager for an insurance company and was released because of his refusal to lobby AND Novosel's privately stated opposition to the company's political stand. Stone had no opposition to her employer before this event and her resignation solely revolved around her personal actions at the specific event