Что такое "guilty slump"?

В контексте:

Rainbow Dash, as always, felt the need to explore. But she didn't take her time. Instead, she bolted immediately towards the opposite side of the house and found the kitchen. Her stomach was growling halfway through the act of searching the pantry. Any box or container she found was full of dust and insect remains. She sighed, feeling her stomach growling again. With a nervouse shuffle, she gazed out the shattered window of the room towards where she had seen the boat full of fishing equipment.

The pegasus shuddered. She wandered through the house in a guilty slump, running a hoof through her mane. She wasn't starving. She was hungry, yes, but she wasn't desperate. There was no need to resort to becoming something base and brutish. Wintergaters ate meat, and that was okay for them. However, fishing in Equestria was only allowed for the feeding and maintenance of animals, pets, and forms of livestock in the possession of the citizenry.