And that power dynamic is major driver of this story!
Brenna is a chef on the palace’s payroll. Her employer is also her landlord. Based on that situation, the Corpulan royal family controls most aspects of her life. Like the other palace attendants, she’s on this system of assigned rations that’s completely controlled by the nobility (until control is given to you).
Annora, on the other hand, is one of two princesses of Corpula. She is in the line of succession, and wields the power of an entire Queendom. She wants food? She gets food, now. There are very few people in a position to halt her gluttonous desires considering her social status.