As the night wore on, Theia and Reeva enjoyed their meal while Hilda stood behind them. Reeva wanted Hilda to eat as well, but it would look out of place in this setting.
If he had paid for the buffet himself, he would have no problem letting Hilda join them, but this was Holen's money. He couldn't afford to be careless, especially since drawing attention to himself could have dire consequences.
However, Reeva wasn't just enjoying the food. He was also on the lookout for Ulla, the potential slave buyer, and possible blood mystic sponsor, based on the description and photo Holen had provided.